LogFAQs > #925178138

Today's trope is Evil Costume Switch. Here is the link: https://tvtropes.org/pmwiki/pmwiki.php/Main/EvilCostumeSwitch

The most dramatic way to show that the protagonist has gone to The Dark Side is to give him or her a new costume. This outfit's coolness is sometimes inversely proportional to the coolness of the original, but is just as often much cooler, more flattering, and (for females) sexier as it bares more skin and curves, with a new hairdo and costume colors to complete their Evil Makeover and look. A character who returns to the side of good usually ditches the entire costume.

Sometimes, a character will split into a Good Twin and an Evil Twin, with the latter wearing one of these costumes. If so, the Good Twin will often wear a more "good" version of the costume, with lots of white and, usually, gold. And, of course, if the character already wears dark colors, the switch is often to a creepy, funeral/ghost style of white.

This trope is arguably most prevalent among Superheroes, where outfits are iconic.

Why does this costume almost always look better than the hero's original? Why, that's because Evil Is Cool and/or sexy (either that, or because it was designed second).

TL,DR: A character gets a new, darker costume to signify that they've turned bad.

Nominations:
Black Suit Spider-Man
Penance (Marvel Comics)
Dark Raiden (Mortal Kombat)