Suggestions by @chrisgilvar

Bill Fagerbakke

as Weredog in Thumb Wrestling Federation

Score: +2

Diedrich Bader

as Cleat Cunningham in Thumb Wrestling Federation

Score: +1

Ashley Johnson

as The Cheetah in Thumb Wrestling Federation

Score: -1

Tom Kenny

as Captain Carpal in Thumb Wrestling Federation

Score: +1

Brian Doyle-Murray

as Captain Carpal in Thumb Wrestling Federation

Score: +1

Patrick Seitz

as Scoutmaster Scott in Thumb Wrestling Federation

Score: +1

Maurice LaMarche

as Captain Carpal in Thumb Wrestling Federation

Score: +1

Phil LaMarr

as Flashback in Thumb Wrestling Federation

Score: +1

Alexander Polinsky

as Mugsy Thumbscrew in Thumb Wrestling Federation

Score: +1

Tom Kenny

as Mugsy Thumbscrew in Thumb Wrestling Federation

Score: +1

Justin Roiland

as Dwayne Bramage in Thumb Wrestling Federation

Score: +1

Kimberly Brooks

as Queen Nefercreepy in Thumb Wrestling Federation

Score: +1

Grey DeLisle

as Itsy Bitsy in Thumb Wrestling Federation

Score: +1

Steve Blum

as Knockout Ninja in Thumb Wrestling Federation

Score: +1

Carlos Alazraqui

as N Fuego in Thumb Wrestling Federation

Score: 0

Richard Steven Horvitz

as Bucks Gazillion in Thumb Wrestling Federation

Score: +1

Cree Summer

as Wasabi in Thumb Wrestling Federation

Score: +1

John Kassir

as Senator Skull in Thumb Wrestling Federation

Score: +1

Dee Bradley Baker

as Stinkfly in Ben 10 Omniverse

Score: +1

Derrick J. Wyatt

as Director in Ben 10 Omniverse

Score: +2