diff --git a/src/Repository/ActorRepository.php b/src/Repository/ActorRepository.php
index 672b4ed..793c9c7 100644
--- a/src/Repository/ActorRepository.php
+++ b/src/Repository/ActorRepository.php
@@ -3,6 +3,8 @@
 namespace App\Repository;
 
 use App\Entity\Actor;
+use App\Entity\User;
+use App\Entity\UserMovie;
 use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
 use Doctrine\Persistence\ManagerRegistry;
 
@@ -38,4 +40,29 @@ class ActorRepository extends ServiceEntityRepository
             ->getOneOrNullResult()
         ;
     }
+
+    public function findOneRandomInWatchedFilms(User $user, ?float $popularity = null, ?string $char = null): ?Actor
+    {
+        $qb = $this->createQueryBuilder('a')
+            ->join('a.movieRoles', 'mr')
+            ->join('mr.movie', 'm')
+            ->join(UserMovie::class, 'um', 'WITH', 'um.movie = m AND um.user = :user')
+            ->setParameter('user', $user);
+
+        if (!empty($popularity)) {
+            $qb->andWhere('a.popularity >= :popularity')
+                ->setParameter('popularity', $popularity);
+        }
+
+        if (!empty($char)) {
+            $qb->andWhere('LOWER(a.name) LIKE LOWER(:name)')
+                ->setParameter('name', '%' . $char . '%');
+        }
+
+        return $qb
+            ->orderBy('RANDOM()')
+            ->setMaxResults(1)
+            ->getQuery()
+            ->getOneOrNullResult();
+    }
 }
diff --git a/tests/Repository/ActorRepositoryTest.php b/tests/Repository/ActorRepositoryTest.php
new file mode 100644
index 0000000..937a221
--- /dev/null
+++ b/tests/Repository/ActorRepositoryTest.php
@@ -0,0 +1,82 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests\Repository;
+
+use App\Entity\Actor;
+use App\Entity\Movie;
+use App\Entity\MovieRole;
+use App\Entity\User;
+use App\Entity\UserMovie;
+use App\Repository\ActorRepository;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+
+class ActorRepositoryTest extends KernelTestCase
+{
+    private EntityManagerInterface $em;
+    private ActorRepository $repo;
+
+    protected function setUp(): void
+    {
+        self::bootKernel();
+        $this->em = self::getContainer()->get(EntityManagerInterface::class);
+        $this->repo = self::getContainer()->get(ActorRepository::class);
+    }
+
+    public function testFindOneRandomInWatchedFilmsReturnsOnlyWatchedActors(): void
+    {
+        $user = new User();
+        $user->setEmail('test-watched-' . uniqid() . '@example.com');
+        $user->setPassword('test');
+        $this->em->persist($user);
+
+        $watchedActor = new Actor();
+        $watchedActor->setName('Watched Actor');
+        $watchedActor->setPopularity(10.0);
+        $this->em->persist($watchedActor);
+
+        $movie = new Movie();
+        $movie->setTmdbId(99990);
+        $movie->setLtbxdRef('watched-test');
+        $movie->setTitle('Watched Film');
+        $this->em->persist($movie);
+
+        $role = new MovieRole();
+        $role->setActor($watchedActor);
+        $role->setMovie($movie);
+        $role->setCharacter('Hero');
+        $this->em->persist($role);
+
+        $userMovie = new UserMovie();
+        $userMovie->setUser($user);
+        $userMovie->setMovie($movie);
+        $this->em->persist($userMovie);
+
+        $unwatchedActor = new Actor();
+        $unwatchedActor->setName('Unwatched Actor');
+        $unwatchedActor->setPopularity(10.0);
+        $this->em->persist($unwatchedActor);
+
+        $movie2 = new Movie();
+        $movie2->setTmdbId(99991);
+        $movie2->setLtbxdRef('unwatched-test');
+        $movie2->setTitle('Unwatched Film');
+        $this->em->persist($movie2);
+
+        $role2 = new MovieRole();
+        $role2->setActor($unwatchedActor);
+        $role2->setMovie($movie2);
+        $role2->setCharacter('Villain');
+        $this->em->persist($role2);
+
+        $this->em->flush();
+
+        for ($i = 0; $i < 10; $i++) {
+            $result = $this->repo->findOneRandomInWatchedFilms($user, 0, 'w');
+            $this->assertNotNull($result);
+            $this->assertSame($watchedActor->getId(), $result->getId());
+        }
+    }
+}