Suggestions by @jesselee

Fozzie Bear

as Fozzie Bear in Lizzie McGuire

Abby Cadabby

as Abby Cadabby in Lizzie McGuire

Cookie Monster

as Cookie Monster in Lizzie McGuire

Big Bird

as Big Bird in Lizzie McGuire

Princess Fiona

as Princess Fiona in Lizzie McGuire

Shrek (Character)

as Shrek in Lizzie McGuire

Princess Peach Toadstool

as Princess Peach in Lizzie McGuire

King Bowser Koopa Sr.

as Bowser in Lizzie McGuire

Donkey Kong (Character)

as Donkey Kong in Lizzie McGuire

Waluigi

as Waluigi in Lizzie McGuire

Wario

as Wario in Lizzie McGuire

Gaston LeGume

as Gaston in Lizzie McGuire

Luigi (Nintendo Character)

as Luigi in Lizzie McGuire

Prince John

as Prince John in Lizzie McGuire

Sandy Cheeks

as Sandy Cheeks in Lizzie McGuire

Mario (Nintendo Character)

as Super Mario in Lizzie McGuire

Zira

as Zira in Lizzie McGuire

Patrick Star

as Patrick Star in Lizzie McGuire

Otto (Spongebob Squarepants)

as SpongeBob SquarePants in Lizzie McGuire

The Cat in the Hat (character)

as The Cat in the Hat in Lizzie McGuire