diff --git a/.env.example b/.env.example
index d5e0567..3b54ae0 100755
--- a/.env.example
+++ b/.env.example
@@ -60,6 +60,13 @@ MAIL_FROM_NAME="${APP_NAME}"
 OPENROUTER_API_KEY=
 AI_DEFAULT_MODEL=deepseek/deepseek-v4-flash-0731
 
+# AI_MODELS: pool of allow-listed free OpenRouter models distributed
+# deterministically across characters (each character keeps its own model).
+AI_MODELS=deepseek/deepseek-v4-flash-0731,nvidia/nemotron-3.5-lightning:free,liquid/lfm-2.5-2.6b:free,openrouter/free,nvidia/nemotron-3-ultra-550b-a55b:free
+# AI_CHARACTER_MODELS: per-character override "name or id=model" (comma
+# separated), e.g. Maria=liquid/lfm-2.5-2.6b:free,7=openrouter/free
+AI_CHARACTER_MODELS=
+
 AWS_ACCESS_KEY_ID=
 AWS_SECRET_ACCESS_KEY=
 AWS_DEFAULT_REGION=us-east-1
diff --git a/.playwright-mcp/persona-identidade-maria.png b/.playwright-mcp/persona-identidade-maria.png
new file mode 100644
index 0000000..5cb0abf
Binary files /dev/null and b/.playwright-mcp/persona-identidade-maria.png differ
diff --git a/app/Http/Controllers/Web/PersonTalkController.php b/app/Http/Controllers/Web/PersonTalkController.php
index 703b363..e713bde 100644
--- a/app/Http/Controllers/Web/PersonTalkController.php
+++ b/app/Http/Controllers/Web/PersonTalkController.php
@@ -209,7 +209,8 @@ class PersonTalkController extends Controller
                 .' Mantenha o fio da meada: referencie o que já foi dito quando fizer sentido.'
                 ."\nResponda de forma curta e natural, em português. Não invente dados pessoais de usuários.";
 
-            $reply = self::askModel($agent, $system, $me->id, $talk);
+            $model = self::resolveModel($agent->model, $agent->name, (int) $agent->id);
+            $reply = self::askModel($model, $system, $me->id, $talk);
             if ($reply === null) {
                 self::recordAgentFailure($agent);
                 self::storeReply(
@@ -294,19 +295,21 @@ class PersonTalkController extends Controller
             }
 
             // Persona plays the citizen in-world: no registration data
-            // travels upstream (RULES.md 2.2) — only simulated city state
-            // and the dialogue itself, which already carries whatever the
-            // peers chose to type.
+            // travels upstream (RULES.md 2.2) — only simulated city state,
+            // the in-world identity broadcast to every client, and the
+            // dialogue itself.
             $system = 'Você é um morador da cidade virtual City10, conversando na rua com alguém que chegou perto de você.'
+                ."\n\n".self::identityBlock($citizen)
                 ."\n\nContexto simulado da cidade: ".json_encode(self::simulatedCityContext(), JSON_UNESCAPED_UNICODE)
                 ."\nAs mensagens abaixo são o histórico real da conversa, inclusive de dias anteriores:"
                 .' mantenha o fio da meada e referencie o que já foi dito quando couber.'
-                ."\nSe te chamarem por um nome na conversa, aquele é o seu nome — aceite-o e não se diga outra pessoa nem se recuse a responder."
+                ."\nSe te chamarem pelo nome na conversa, responda naturalmente — ele é seu; não se negue a responder."
                 ."\nFrases curtas e naturais, tom de vizinho conversando na rua; nada de linguagem de atendimento, como 'como posso ajudar'."
                 ."\nNunca forneça nem invente e-mail, senha, endereço, telefone ou dados de conta de ninguém."
                 ."\nResponda em português.";
 
-            $reply = self::askModel(null, $system, $me->id, $talk);
+            $model = self::resolveModel($citizen->ai_model, $citizen->name, (int) $citizen->id);
+            $reply = self::askModel($model, $system, $me->id, $talk);
             if ($reply === null) {
                 self::storeReply($replySides, __('city.chat_error'), true);
                 cache()->forget($pendingKey);
@@ -408,11 +411,81 @@ class PersonTalkController extends Controller
         ];
     }
 
+    /**
+     * Resolve the OpenRouter model for a character or agent.
+     *
+     * Priority: entity column (characters.ai_model / agents.model) →
+     * environment map (AI_CHARACTER_MODELS by id then by name) →
+     * deterministic pool slot (AI_MODELS, stable per id) → AI_DEFAULT_MODEL
+     * → first allow-listed model. Everything is validated against
+     * config('ai.allowed_models') (RULES.md 2.1).
+     */
+    public static function resolveModel(?string $columnModel, string $name, int $id): string
+    {
+        $allowed = config('ai.allowed_models', []);
+
+        $map = config('ai.character_models', []);
+        $candidates = [
+            $columnModel,
+            $map[(string) $id] ?? null,
+            $map[strtolower($name)] ?? null,
+        ];
+
+        foreach ($candidates as $candidate) {
+            if (is_string($candidate) && in_array($candidate, $allowed, true)) {
+                return $candidate;
+            }
+        }
+
+        $pool = array_values(array_filter(
+            (array) config('ai.models', []),
+            static fn ($model): bool => is_string($model) && in_array($model, $allowed, true)
+        ));
+        if ($pool !== []) {
+            return $pool[$id % count($pool)];
+        }
+
+        $default = config('ai.default_model');
+        if (is_string($default) && in_array($default, $allowed, true)) {
+            return $default;
+        }
+
+        return (string) ($allowed[0] ?? $default);
+    }
+
+    /**
+     * Identity/personality block injected into the persona prompt.
+     *
+     * Only in-world data goes upstream: the display name already shown
+     * above heads and broadcast by the presence API, plus the profile
+     * fields below. Registration data (e-mail, password, account data)
+     * is never included (RULES.md 2.2).
+     */
+    private static function identityBlock(Character $character): string
+    {
+        $lines = [
+            'Identidade do seu personagem — aja sempre de acordo com ela:',
+            '- Nome: '.$character->name,
+            '- Idade: '.($character->ai_age ?? 'não informada'),
+            '- Sexo: '.($character->ai_gender ?? 'não informado'),
+        ];
+
+        if (filled($character->ai_bio)) {
+            $lines[] = '- Bio: '.$character->ai_bio;
+        }
+
+        if (filled($character->ai_personality)) {
+            $lines[] = '- Personalidade: '.$character->ai_personality;
+        }
+
+        return implode("\n", $lines);
+    }
+
     /**
      * Call OpenRouter with the given system prompt and the full daily
      * conversation of the pair. Returns null on any failure.
      */
-    private static function askModel(?AiAgent $agent, string $system, int $meCharacterId, PersonTalk $talk): ?string
+    private static function askModel(string $model, string $system, int $meCharacterId, PersonTalk $talk): ?string
     {
         $peerKind = $talk->to_agent_id !== null ? PersonTalk::KIND_AGENT : PersonTalk::KIND_CHARACTER;
         $peerId = (int) ($talk->to_agent_id ?? $talk->to_character_id);
@@ -438,11 +511,6 @@ class PersonTalkController extends Controller
             }
         }
 
-        $model = ($agent === null ? null : $agent->model);
-        if (! in_array($model, config('ai.allowed_models', []), true)) {
-            $model = config('ai.default_model');
-        }
-
         // Cap the upstream wait below PHP's default execution limit so
         // the after-response job is never killed mid-flight.
         $timeout = min((int) config('ai.openrouter.timeout', 30), 20);
diff --git a/app/Models/Character.php b/app/Models/Character.php
index 2feb2a0..b4a9255 100755
--- a/app/Models/Character.php
+++ b/app/Models/Character.php
@@ -17,7 +17,8 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
  * ticker mutates needs and job progress continuously while nobody is online.
  */
 #[Fillable([
-    'user_id', 'city_id', 'name', 'skin', 'hair', 'shirt',
+    'user_id', 'city_id', 'name', 'ai_model', 'ai_age', 'ai_gender',
+    'ai_personality', 'ai_bio', 'skin', 'hair', 'shirt',
     'pos_x', 'pos_y', 'pos_z', 'money', 'energy', 'hunger', 'thirst', 'health',
     'state', 'job_id', 'house_id', 'education', 'exercise_count', 'is_online', 'last_tick_at',
     'hospitalized_until', 'face', 'beard', 'accessory', 'ride_kind', 'ride_until',
@@ -27,6 +28,20 @@ class Character extends Model
     /** @use HasFactory<CharacterFactory, $this> */
     use HasFactory;
 
+    /**
+     * Default personality pool for characters created without one.
+     *
+     * @var list<string>
+     */
+    public const AI_PERSONALITIES = [
+        'Extrovertido e curioso, adora puxar conversa com quem passa.',
+        'Tranquilo e observador, fala pouco mas escuta tudo com atenção.',
+        'Bem-humorado e espirituoso, brinca com todo mundo por perto.',
+        'Sério e direto, vai ao ponto sem rodeios.',
+        'Gentil e prestativo, sempre oferece ajuda antes de perguntarem.',
+        'Aventureiro e barulhento, vive contando histórias da cidade.',
+    ];
+
     public const STATE_AWAKE = 'awake';
 
     public const STATE_SLEEPING = 'sleeping';
@@ -176,6 +191,8 @@ class Character extends Model
             'user_id' => $user->id,
             'city_id' => $city->id,
             'name' => $firstName,
+            'ai_age' => random_int(18, 68),
+            'ai_personality' => self::AI_PERSONALITIES[array_rand(self::AI_PERSONALITIES)],
             'skin' => random_int(1, 4),
             'hair' => random_int(1, 4),
             'shirt' => random_int(1, 5),
@@ -220,6 +237,7 @@ class Character extends Model
     protected function casts(): array
     {
         return [
+            'ai_age' => 'integer',
             'pos_x' => 'float',
             'pos_y' => 'float',
             'pos_z' => 'float',
diff --git a/config/ai.php b/config/ai.php
index 39f3980..0d12a84 100755
--- a/config/ai.php
+++ b/config/ai.php
@@ -1,5 +1,33 @@
 <?php
 
+/*
+|--------------------------------------------------------------------------
+| Character model map parser
+|--------------------------------------------------------------------------
+|
+| Turns AI_CHARACTER_MODELS entries such as "Maria=qwen/qwen3.7-flash:free"
+| or "3=deepseek/deepseek-v4-flash-0731" into a lookup array keyed by
+| lowercased character id or name. Invalid pairs are ignored.
+|
+*/
+$parseCharacterModels = static function (string $raw): array {
+    $map = [];
+
+    foreach (explode(',', $raw) as $pair) {
+        $pair = trim($pair);
+        if ($pair === '' || ! str_contains($pair, '=')) {
+            continue;
+        }
+
+        [$key, $model] = array_map('trim', explode('=', $pair, 2));
+        if ($key !== '' && $model !== '') {
+            $map[strtolower($key)] = $model;
+        }
+    }
+
+    return $map;
+};
+
 return [
 
     /*
@@ -50,8 +78,43 @@ return [
         'poolside/laguna-xs-2.1:free',
         'inclusionai/ling-3.0-flash-vl:free',
         'qwen/qwen3.7-flash:free',
+        // Verified working free chat models (live probe of the OpenRouter
+        // catalogue). Safe defaults for per-character assignment.
+        'deepseek/deepseek-v4-flash-0731',
+        'nvidia/nemotron-3.5-lightning:free',
+        'liquid/lfm-2.5-2.6b:free',
+        'openrouter/free',
     ],
 
+    /*
+    |--------------------------------------------------------------------------
+    | Per-Character Model Pool (AI_MODELS)
+    |--------------------------------------------------------------------------
+    |
+    | Comma-separated allow-listed models distributed deterministically
+    | across characters (each character keeps a stable own model). Falls
+    | back to AI_DEFAULT_MODEL when empty.
+    |
+    */
+
+    'models' => array_values(array_filter(array_map(
+        'trim',
+        explode(',', (string) env('AI_MODELS', ''))
+    ))),
+
+    /*
+    |--------------------------------------------------------------------------
+    | Per-Character Model Map (AI_CHARACTER_MODELS)
+    |--------------------------------------------------------------------------
+    |
+    | Explicit "id or name = model" overrides from the environment, e.g.
+    | "Maria=liquid/lfm-2.5-2.6b:free,7=openrouter/free". Takes priority
+    | over the pool; entries outside the allow-list are ignored.
+    |
+    */
+
+    'character_models' => $parseCharacterModels((string) env('AI_CHARACTER_MODELS', '')),
+
     /*
     |--------------------------------------------------------------------------
     | Default Model
diff --git a/database/migrations/2026_10_31_210846_add_ai_profile_to_characters_table.php b/database/migrations/2026_10_31_210846_add_ai_profile_to_characters_table.php
new file mode 100644
index 0000000..460f71e
--- /dev/null
+++ b/database/migrations/2026_10_31_210846_add_ai_profile_to_characters_table.php
@@ -0,0 +1,67 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+/**
+ * Adds the per-character AI profile to "characters".
+ *
+ * Every citizen can now carry its own model override plus the identity
+ * used by the conversational persona: age, gender, short biography and
+ * personality. Existing rows are backfilled with a deterministic default
+ * persona so no character speaks without one.
+ */
+return new class extends Migration
+{
+    /**
+     * Personality pool used for the backfill (kept inline so this
+     * migration stays a self-contained snapshot).
+     *
+     * @var list<string>
+     */
+    private const PERSONALITIES = [
+        'Extrovertido e curioso, adora puxar conversa com quem passa.',
+        'Tranquilo e observador, fala pouco mas escuta tudo com atenção.',
+        'Bem-humorado e espirituoso, brinca com todo mundo por perto.',
+        'Sério e direto, vai ao ponto sem rodeios.',
+        'Gentil e prestativo, sempre oferece ajuda antes de perguntarem.',
+        'Aventureiro e barulhento, vive contando histórias da cidade.',
+    ];
+
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('characters', function (Blueprint $table): void {
+            $table->string('ai_model', 120)->nullable()->after('name');
+            $table->unsignedSmallInteger('ai_age')->nullable();
+            $table->string('ai_gender', 24)->nullable();
+            $table->string('ai_personality', 255)->nullable();
+            $table->string('ai_bio', 500)->nullable();
+        });
+
+        DB::table('characters')
+            ->whereNull('ai_personality')
+            ->orderBy('id')
+            ->get()
+            ->each(function (object $row): void {
+                DB::table('characters')->where('id', $row->id)->update([
+                    'ai_age' => 18 + (7 * (int) $row->id) % 50,
+                    'ai_personality' => self::PERSONALITIES[(int) $row->id % count(self::PERSONALITIES)],
+                ]);
+            });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('characters', function (Blueprint $table): void {
+            $table->dropColumn(['ai_model', 'ai_age', 'ai_gender', 'ai_personality', 'ai_bio']);
+        });
+    }
+};
diff --git a/tests/Feature/PersonTalkTest.php b/tests/Feature/PersonTalkTest.php
index 60859c7..c30cb18 100644
--- a/tests/Feature/PersonTalkTest.php
+++ b/tests/Feature/PersonTalkTest.php
@@ -2,6 +2,7 @@
 
 namespace Tests\Feature;
 
+use App\Http\Controllers\Web\PersonTalkController;
 use App\Models\AiAgent;
 use App\Models\Character;
 use App\Models\PersonTalk;
@@ -521,4 +522,121 @@ class PersonTalkTest extends TestCase
         $this->assertNotNull($reply);
         $this->assertSame('Praça fechada para obra, já passa.', $reply->body);
     }
+
+    /**
+     * Model resolution priority: column → env map (id/name) → pool slot,
+     * always inside the allow-list (RULES.md 2.1) and stable per id.
+     */
+    public function test_model_resolution_priority_and_allow_list(): void
+    {
+        $mapped = 'openrouter/free';
+        $pooled = 'nvidia/nemotron-3.5-lightning:free';
+
+        config([
+            'ai.models' => [$pooled, $mapped],
+            'ai.character_models' => [
+                'maria' => $mapped,
+                '7' => $pooled,
+                'bad' => 'not/allowed-model',
+            ],
+        ]);
+
+        // 1) Character column wins over everything.
+        $this->assertSame(
+            $mapped,
+            PersonTalkController::resolveModel($mapped, 'Qualquer', 99)
+        );
+
+        // 2) Env map by name (case-insensitive) and by id.
+        $this->assertSame($mapped, PersonTalkController::resolveModel(null, 'Maria', 3));
+        $this->assertSame($pooled, PersonTalkController::resolveModel(null, 'Outro', 7));
+
+        // 3) Non allow-listed entries are ignored → deterministic pool slot.
+        $fromPool = PersonTalkController::resolveModel('not/allowed-model', 'Bad', 4);
+        $this->assertContains($fromPool, [$pooled, $mapped]);
+        $this->assertNotSame('not/allowed-model', $fromPool);
+
+        // 4) Empty map/pool falls back to the allow-listed default.
+        config(['ai.character_models' => [], 'ai.models' => []]);
+        $default = config('ai.default_model');
+        $this->assertContains($default, config('ai.allowed_models'));
+        $this->assertSame($default, PersonTalkController::resolveModel(null, 'X', 1));
+
+        // 5) Same character always resolves to the same model.
+        config(['ai.models' => [$pooled, $mapped]]);
+        $stable = PersonTalkController::resolveModel(null, 'Estável', 5);
+        $this->assertSame($stable, PersonTalkController::resolveModel(null, 'Estável', 5));
+    }
+
+    /**
+     * The identity/personality profile and the resolved model travel in
+     * the upstream payload while registration data stays out (RULES.md 2.2).
+     */
+    public function test_identity_and_model_flow_into_upstream_payload(): void
+    {
+        config([
+            'ai.openrouter.api_key' => 'test-key',
+            'ai.models' => ['liquid/lfm-2.5-2.6b:free'],
+            'ai.character_models' => [],
+        ]);
+
+        Http::fake([
+            'openrouter.ai/*' => Http::response([
+                'choices' => [['message' => ['content' => 'Oi! Tudo tranquilo na cidade.']]],
+            ]),
+        ]);
+
+        [$userA, $me] = $this->makeCitizen();
+        [$userB, $them] = $this->makeCitizen();
+
+        $them->update([
+            'ai_age' => 34,
+            'ai_gender' => 'feminino',
+            'ai_personality' => 'Extrovertido e curiosa, adora puxar conversa.',
+            'ai_bio' => 'Moradora do centro, vive nas novidades do bairro.',
+        ]);
+
+        $this->actingAs($userA)
+            ->postJson('/talk/person', [
+                'kind' => 'character',
+                'peer' => $them->id,
+                'message' => 'Oi, tudo bem?',
+            ])
+            ->assertCreated();
+
+        $peerEmail = $userB->email;
+        $peerName = $them->name;
+        Http::assertSent(function ($request) use ($peerEmail, $peerName): bool {
+            $payload = $request->data();
+            $encoded = json_encode($payload, JSON_UNESCAPED_UNICODE);
+            $system = (string) ($payload['messages'][0]['content'] ?? '');
+
+            return $payload['model'] === 'liquid/lfm-2.5-2.6b:free'
+                && str_contains($system, 'Idade: 34')
+                && str_contains($system, 'Sexo: feminino')
+                && str_contains($system, 'Extrovertido e curiosa')
+                && str_contains($system, 'Moradora do centro')
+                && str_contains($system, 'Nome: '.$peerName)
+                && ! str_contains($encoded, $peerEmail);
+        });
+
+        // The reply from the fake model is stored normally.
+        $this->assertNotNull(PersonTalk::query()
+            ->where('from_character_id', $them->id)
+            ->where('body', 'Oi! Tudo tranquilo na cidade.')
+            ->first());
+    }
+
+    /**
+     * Fresh citizens are created with a ready-to-use default persona.
+     */
+    public function test_new_characters_receive_default_persona(): void
+    {
+        [, $character] = $this->makeCitizen();
+
+        $this->assertNotNull($character->ai_age);
+        $this->assertGreaterThanOrEqual(18, $character->ai_age);
+        $this->assertLessThanOrEqual(68, $character->ai_age);
+        $this->assertContains($character->ai_personality, Character::AI_PERSONALITIES);
+    }
 }