Suggestions by @mephilesthedark

Patrick Star

as Cameos in Toon'd Out

Buzz Lightyear

as Cameos in Toon'd Out

Sheriff Woody Pride

as Cameos in Toon'd Out

Shockwave

as Cartoon Villains in Add Anything

Soundwave

as Cartoon Villains in Add Anything

Michael B. Jordan

as Great Castings, Bad Execution in Add Anything

Ned Beatty

as In Memoriam... in Add Anything

James Stewart

as In Memoriam... in Add Anything

Louis Armstrong

as In Memoriam... in Add Anything

Betty White

as In Memoriam... in Add Anything

Dennis Hopper

as In Memoriam... in Add Anything

James Avery

as In Memoriam... in Add Anything

David Ogden Stiers

as In Memoriam... in Add Anything

Lance Reddick

as In Memoriam... in Add Anything

Eartha Kitt

as In Memoriam... in Add Anything

Jim Varney

as In Memoriam... in Add Anything

Stefán Karl Stefánsson

as In Memoriam... in Add Anything

Gilbert Gottfried

as In Memoriam... in Add Anything

Vincent Price

as In Memoriam... in Add Anything

Mel Blanc

as In Memoriam... in Add Anything