Suggestions by @nineteen_eighty_two

Salma Hayek

as Queen Kitty Softpaws in Unikitty Vs. The Forces Of Evil

Antonio Banderas

as King Puss in Unikitty Vs. The Forces Of Evil

Tara Strong

as Green Jr in Uni-Green!

Harriet Carmichael

as Green in Uni-Green!

Twilight Sparkle

as Black in Multiverse/Colourblocks

Unikitty

as White in Multiverse/Colourblocks

Queen Watevra Wa'Nabi

as Brown in Multiverse/Colourblocks

Cinderella (Disney)

as Cyan in Multiverse/Colourblocks

Mr. Piranha

as Magenta in Multiverse/Colourblocks

Moana (Disney Character)

as Violet in Multiverse/Colourblocks

Anna (Disney)

as Indigo in Multiverse/Colourblocks

Lieutenant Mattias (Frozen II)

as Purple in Multiverse/Colourblocks

Mrs. Tarantula

as Orange in Multiverse/Colourblocks

Elsa (Disney)

as Green in Multiverse/Colourblocks

Duke of Weselton

as Yellow in Multiverse/Colourblocks

Mr. Shark

as Blue in Multiverse/Colourblocks

Meilin "Mei" Lee

as Red in Multiverse/Colourblocks

Genie (Disney)

as Pink in Multiverse/Colourblocks

Grey DeListle-Griffin

as Bester in Best & Bester (American English Dub)

Tara Strong

as Bester in Best & Bester (American English Dub)