Mighty Marvin is a bald black man wearing a vest and brown pants, but is shirtless. He is basically a mixture of Boxer Barry's body and Hilarious Harry's vest.

In multiplayerEdit

Mighty Marvin is a playable multiplayer character in Serious Sam HD and Serious Sam 3: BFE.

He is one of the few models in Serious Sam HD that didn't exist in Serious Sam 1. He was probably added because Boxer Barry looks good with Hilarious Harry's vest.