Suggestions by @thecrimsonpaw

Spoiler

as "The Seventh Member." in My Little Pony and Transformers: Friendship in Disguise

Garry Chalk

as Nemesis Prime in My Little Pony and Transformers: Friendship in Disguise

Cobra Commander

as Next Project: in My Little Pony and Transformers: Friendship in Disguise

Clancy Brown

as "The Planet Eater." in My Little Pony and Transformers: Friendship in Disguise

Unicron

as "The Planet Eater." in My Little Pony and Transformers: Friendship in Disguise

Spoiler

as "The Planet Eater." in My Little Pony and Transformers: Friendship in Disguise

Kevin Costner

as "The False Prophet..." in My Little Pony and Transformers: Friendship in Disguise

Sentinel Prime

as "The False Prophet..." in My Little Pony and Transformers: Friendship in Disguise

Spoiler

as "The False Prophet..." in My Little Pony and Transformers: Friendship in Disguise

Falcon Sound Effects

as Laserbeak in My Little Pony and Transformers: Friendship in Disguise

Sam Vincent

as Kickback in My Little Pony and Transformers: Friendship in Disguise

Fred Tatasciore

as Bombshell in My Little Pony and Transformers: Friendship in Disguise

Rob Paulsen

as Shrapnel in My Little Pony and Transformers: Friendship in Disguise

Keith David

as Devastator in My Little Pony and Transformers: Friendship in Disguise

Gregg Berger

as Grimlock in My Little Pony and Transformers: Friendship in Disguise

Ryan Drummond

as Misfire in My Little Pony and Transformers: Friendship in Disguise

Falcon Sound Effects

as Squawktalk in My Little Pony and Transformers: Friendship in Disguise

Gorilla Sound Effects

as Beastbox in My Little Pony and Transformers: Friendship in Disguise

Bat Sound Effects

as Ratbat in My Little Pony and Transformers: Friendship in Disguise

Tiger Sound Effects

as Ravage in My Little Pony and Transformers: Friendship in Disguise