query: Which hero does The Chameleon fight?
passage: 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.
passage: Alpha Centurion
During the "Zero Hour" storyline, Superman was transported to an alternate timeline where he stumbled upon a Metropolis whose hero was the Alpha Centurion, a man named Marcus Aelius from Ancient Rome who had been trained by an alien race called the Virimiru only to return centuries later. Initially joining the gathered heroes, the Alpha Centurion went on to join Extant and Parallax in fighting against the heroes of the DC Universe, siding with Parallax as he promised to restore Alpha Centurion's apparently lost timeline. After the heroes had to restart existence with a new Big Bang, all alternate realities ceased to exist and this Alpha Centurion was no more.