Lizard

The Lizard (Curt Connors) is a fictional character, a supervillain appearing in American comic books published by Marvel Comics. The character is usually depicted as an enemy of Spider-Man. In 2009, The Lizard was ranked IGN's 62nd Greatest Comic Villain of All Time.[1] In the stories, Dr. Connors was a genetic biologist who researched the ability of certain reptiles to regrow missing limbs, partially to find a way to regenerate his right arm. After a test on himself, he transforms into a violent lizard monster. Though able to revert to his human form, he suffers occasional fits of his alter ego breaking free.

The character has appeared in numerous Spider-Man cartoons and video games, and is portrayed by Dylan Baker (whose version never transformed into The Lizard) in the 2004 film Spider-Man 2 and its 2007 sequel Spider-Man 3, and by Rhys Ifans in the 2012 film The Amazing Spider-Man, and has been voiced by Dee Bradley Baker in various voice-over media.