Suggestions by @alphabetfilmer

Paul Greenberg

as Mr. Bump (The Mr. Men Show) in Mr. Men and Little Miss

Phil Lollar

as Mr. Strong (The Mr. Men Show) in Mr. Men and Little Miss

Lee Tockar

as Mr. Birthday in Mr. Men and Little Miss

Ashleigh Ball

as Little Miss Birthday in Mr. Men and Little Miss

Garry Chalk

as Mr. Christmas in Mr. Men and Little Miss

Ashleigh Ball

as Little Miss Christmas in Mr. Men and Little Miss

Trevor Devall

as Mr. Chatterbox in Mr. Men and Little Miss

Kelly Sheridan

as Little Miss Jealous in Mr. Men and Little Miss

Mr. Bump

as Bobby in Animaniacs (My Way)

Mr. Happy

as Squit in Animaniacs (My Way)

Mr. Grumpy

as Pesto in Animaniacs (My Way)

Mr. Strong

as Buttons in Animaniacs (My Way)

Little Miss Tiny

as Mindy in Animaniacs (My Way)

Mr. Small

as Skippy Squirrel in Animaniacs (My Way)

Little Miss Bossy

as Slappy Squirrel in Animaniacs (My Way)

Little Miss Giggles

as Dot in Animaniacs (My Way)

Mr. Funny

as Wakko in Animaniacs (My Way)

Mr. Tickle

as Yakko in Animaniacs (My Way)

Mr. Fussy

as Professor Scratchensniff in Animaniacs (My Way)

Petey

as Brain in Animaniacs (My Way)