Marik Ishtar/Yami Marik.

LazerDisc27, yes.

He’s pretty cool. I really love Scott tho he’s my fav

Luke Lerner and Light Yagami (if he counts as a teen)

Roderick Heffley

Chloe Bourgeios from Miraculous. Can't believe Thomas Astruc ruined her!

Marx from kirby counts?

Idk maybe flowey from undetale

Eric Cartman is my favorite child villain.

Luke from Percy Jackson