Suggestions by @faisalalrasheed3

Chris Savino

as Director in Merry Preteen Batman (2003)

Score: +1

Genndy Tartakovsky

as Director in Merry Preteen Batman (2003)

Score: +1

Spike Feresten

as Writer in Unfrosted (2000)

Score: +1

Jerry Seinfeld

as Writer in Unfrosted (2000)

Score: +1

Eddie Deezen

as Lalavava Astronomonov in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Kath Soucie

as Lee Lee in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Kimberly Brooks

as Mee Mee in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Kath Soucie

as Sophie Rondeau in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Tom Kenny

as Beau's younger brother in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Kath Soucie

as Beau's Mum in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Rob Paulsen

as Beau's Dad in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Jeff Bennett

as Simon Rondeau in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Eddie Deezen

as Mandark Astronomonov in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Jeff Bennett

as Dexter's Dad in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Kath Soucie

as Dexter's Mum in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Allison Moore

as Dee Dee in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Kat Cressida

as Dee Dee in Dexter's Laboratory (1996-2003; with Beau)

Score: +2

Candi Milo

as Dexter in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Christine Cavanaugh

as Dexter in Dexter's Laboratory (1996-2003; with Beau)

Score: +1

Pamela Adlon

as Beau Rondeau in Dexter's Laboratory (1996-2003; with Beau)

Score: +1