Kevin Michael Richardson is an American actor who voices the Mauler Twins and Monster Girl in her monster form in Invincible.
He is known for his distinctively deep voice and has played mostly villainous characters in animation and video games. He has also voiced characters on Seth MacFarlane's shows Family Guy, The Cleveland Show, and American Dad!. He also voices the Autobot Bulkhead in both Transformers: Prime and its pseudo sequel.