Chameleon (comics)
The Chameleon (Dmitri Smerdyakov) is a fictional character, a supervillain appearing in American comic books published by Marvel Comics. Commonly depicted as a master of disguise and the half-brother of Kraven the Hunter, the Chameleon is known as being the first supervillain for Spider-Man to face by first appearing in the original issue of "The Amazing Spider-Man".
Monkey Hero
At the end of dungeons, similar to the Zelda series, there is what is known as a boss, the "leader" of the dungeon that must be defeated in order to complete the dungeon. On monkey hero, the main antagonist is the "Nightmare King."