Isaac C. Singleton Jr.. Actor: Fluch der Karibik. Isaac C. Singleton Jr. is an African-American actor known for playing Bo'sun from Pirates of the Caribbean: The Curse of the Black Pearl and voicing Thanos in Marvel cartoons and games. He also acted in other films, shows and games including Planet of the Apes, Anger Management, Batman: Arkham Knight, Transformers, Deadpool, Breaking Dawn and Bones.