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".
Dominators (DC Comics)
The Dominators (also referred to as the Dominion) appear on the "Legion of Super Heroes" animated series. They form an alliance with Imperiex and become part of his army throughout the season. They try to help him build a superweapon, powered by a strange cloud of cosmic energy. The Legion eventually defeat them, along with Validus and Mekt Ranzz. They later helped Imperiex create a missile that will lead other missiles to Chameleon Boy's home planet.The Dominators make a cameo in "", as one of the first races in the universe. They attack other worlds and the Guardians create the Green Lantern Corps in response to their threat.