Chameleon (comics)
The Chameleon was born a Soviet citizen named Dmitri Smerdyakov (Дмитрий Смердяков). In his youth, he was a servant and half-brother to Sergei Kravinoff and eventually became a minor associate to Gustav Fiers. Although Dmitri and Sergei were friends, Sergei was often abusive to Smerdyakov, leading to a combination of admiration and resentment towards Kravinoff. Eventually, Smerdyakov emigrated to the United States of America. As he had made a talent for himself during his youth, impressing his brother by impersonating friends and neighbors, he assumed an even more impressive disguise: the identity of Chameleon. During his first known criminal outing, he impersonated Spider-Man, though he was exposed and arrested. Shortly afterward, Kraven the Hunter himself came to America, and the Chameleon set his old associate's sights on Spider-Man. Both men became long-time enemies of Spider-Man, part of his primary rogues' gallery.
List of Batman: The Brave and the Bold characters
A villain who makes a cameo appearance in "The Knights of Tomorrow."Mongul is the dictator of War World. He is an enemy of Superman. To bring more gladiators to War World, Mongul transports Jonah Hex from the past in order to capture Batman. Batman and Jonah Hex release the prisoners who chase after Mongul and Mongal. In "Death Race to Oblivion", he paired up the superheroes and supervillains to race against Steppenwolf to determine the fate of the Earth.Mongal is the sister of Mongul. She is in competition with Mongul when it comes to his fighters fighting against her team. She tries to get Hex to leave. Jonah Hex ended up tying her to his robotic horse. She broke free just as Batman and Jonah had freed the prisoners where she and Mongul were chased by them.