Suggestions by @palamepaj

Mirna Kane

as Canadian in Characters by heritage

Edd (Ed, Edd n Eddy)

as Canadian in Characters by heritage

Eddy (Ed, Edd n Eddy)

as Canadian in Characters by heritage

Deadpool (Wade Wilson)

as Canadian in Characters by heritage

Fievel Mousekewitz

as Russian in Characters by heritage

Dexter

as Russian in Characters by heritage

The Scotsman

as Celtic in Characters by heritage

Alice Nimbletoes

as British in Characters by heritage

Horrid Henry

as British in Characters by heritage

Joffrey Baratheon

as British in Characters by heritage

Maid Marian

as British in Characters by heritage

Peppa Pig (character)

as British in Characters by heritage

Queen of Hearts

as British in Characters by heritage

Angelina Mouseling

as British in Characters by heritage

Iridessa

as British in Characters by heritage

Alice (Disney)

as British in Characters by heritage

Wendy Darling

as British in Characters by heritage

Silvermist

as British in Characters by heritage

Hermione Granger

as British in Characters by heritage

Garnet

as British in Characters by heritage