"Wait wait wait! You guys KILL your clones, copies, time-paradox duplicates, and supervillain-made robot yous?! Why?! Having a bunch of versions of you around is great! You guys really have to learn how to co-exist and accept other ponies for their differences; violence isn't always the answer, guys!"
— Trixie Lulamoon, on clones :P

(From right to left they are Trixie, Trixie from Equestria Girls, Lulie her mirror pool clone, Dark Trixie, Mean Trixie, Tricia her time paradox copy, and the Trixie Doll) :D