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".
Chameleon (comics)
In his 2010 appearances in "The Amazing Spider-Man", writer Fred Van Lente placed a stronger emphasis on his skills of disguise rather than his superhuman powers. In this portrayal, Chameleon kidnaps people and brutally kills them by dumping them in an acid bath. From listening to them beg for their lives, he alters his pitch to sound exactly alike and takes a face print to make into a mask. This more chilling Chameleon also seeks to fix the lives of his "faces", attempting to rectify the problems of their lives while he poses as them as a part of some warped heroic view of himself.