John Cena is an American rapper, actor, and professional wrestler. He is best known for his time in WWE, where he is a 16-time world champion. Cena has also released several rap albums, including "You Can't See Me" and "The Time Is Now." He has also starred in several films, including "The Marine" and "12 Rounds." Cena is known for his signature catchphrases, such as "You can't see me" and "Hustle, Loyalty, Respect."