Suggestions by @edvinromas1

Stephen Stanton

as Grotusque in Transformers Unleash the Beast

Score: +1

Frank Welker

as Doublecross in Transformers Unleash the Beast

Score: +1

Mark Allan Stewart

as Swoop in Transformers Unleash the Beast

Score: 0

Sam Riegel

as Snarl in Transformers Unleash the Beast

Score: 0

Billy Bob Thompson

as Sludge in Transformers Unleash the Beast

Score: +1

Travis Willingham

as Slug in Transformers Unleash the Beast

Score: +2

Greg Berger

as Grimlock in Transformers Unleash the Beast

Score: +1

Wayne Grayson

as Sky-Byte in Transformers Unleash the Beast

Score: +1

Scott McNeil

as Dynobot in Transformers Unleash the Beast

Score: -2

Scott McNeil

as Rattrap in Transformers Unleash the Beast

Score: -1

Richard Newman

as Rhinox in Transformers Unleash the Beast

Score: 0

Ben Schwartz

as Cheetor in Transformers Unleash the Beast

Score: 0

Garry Chalk

as Optimus Primal in Transformers Unleash the Beast

Score: 0

Zeno Robinson

as Bumblebee in Transformers: Generation Neo (戦え!超ロボット生命体トランスフォーマージェネレーションネオ)

Score: 0

Optimus Prime (G1)

as Transformers in Super Smash Has-Bros.

Score: +3

Nika Futterman

as Chromia in Transformers: Animal Warriors

Score: +1

Cissy Jones

as Elita-1 in Transformers: Animal Warriors

Score: +1

Michael Ironside

as Ultra Magnus in Transformers: Animal Warriors

Score: +2