Chameleon (comics)
Created by writer Stan Lee and artist Steve Ditko, the character first appeared in "The Amazing Spider-Man" #1 (March 1963), making him the first member of Spider-Man's rogues' gallery, based on issue publication date, excluding the burglar who murdered Ben Parker (Supercharger was the first Spider-Man supervillain chronologically). He is also well known to be related to Kraven the Hunter. That revealed relationship helped evolve him as a major villain compared to his original depiction of being just a solo villain in the original issue of "The Amazing Spider-Man".
Kallen Stadtfeld
When Lelouch takes the U.F.N. leaders hostage, Kallen insists that she'll take Lelouch down personally, as she possesses the only Knightmare capable of fighting Suzaku's "Lancelot Albion". However, Xingke orders her not to fight, fearing for the safety of the hostages. After the Black Knights side with Schneizel, Kallen is stationed in the front lines. She breaks away from the main line to try to reach Lelouch, but is called back. Kallen breaks into the "Avalon" and attempts to kill Lelouch, with tears in her eyes as she does so, but is stopped by C.C. Kallen defeats C.C. and, with the help of Gino, proceeds to the "Damocles" for a final confrontation with Suzaku.