Riri Williams/Ironheart (Marvel)

Ironheart, (Better known as Riri Williams) is the main protagonist of her new Ironheart and Invincible Ironman series. She later took on the mantle of Ironman in a very strange fashion.

Why She Sucks

 * 1) She is a blatant Mary Sue with no personality.
 * 2) Her origin story made no sense at all.
 * 3) Riri Williams only exists just to replace Tony Stark, when yet there was nothing consistently wrong with the latter to begin with.
 * 4) Her suit's design took a step down from Stark's, barely looking like it was made to battle.
 * 5) She is otherwise a very pointless addition to Marvel Comics, and didn't have a real good reason to become the new Ironman.

Trivia

 * Riri Williams is apparently 15 years old in the comics.