Ajaxis is a fictional villain

Villain

A villain is an "evil" character in a story, whether a historical narrative or, especially, a work of fiction. The villain usually is the antagonist, the character who tends to have a negative effect on other characters...

 in the Marvel Comics

Marvel Comics

Marvel Worldwide, Inc., commonly referred to as Marvel Comics and formerly Marvel Publishing, Inc. and Marvel Comics Group, is an American company that publishes comic books and related media...

 universe.

Fictional character biography

Super-villain Lava Man Ajaxis was introduced during the Civil War

Civil War (comics)

Civil War is a 2006-2007 Marvel Comics crossover storyline built around a self-titled seven-issue limited series written by Mark Millar and penciled by Steve McNiven, which ran through various other titles published by Marvel at the time...

 event, having been located and found by Baron Zemo

Baron Zemo

Baron Zemo is the name of two fictional characters, both supervillains, in various Marvel Comics comic books, notably Captain America and the Avengers...

 and his Thunderbolts

Thunderbolts (comics)

The Thunderbolts are a Marvel Comics superhero team, which consists mostly of former supervillains. The group first appeared in The Incredible Hulk #449 , and was created by Kurt Busiek and Mark Bagley.-Publication history:...

. According to the story, Ajaxis was made to join the Thunderbolts or face jail time.

Ajaxis was identified as one of the 142 characters registered for the Fifty State Initiative

Fifty State Initiative

The Fifty State Initiative, often referred to as simply The Initiative, is a fictional governmental plan that appears in comic books published by Marvel Comics, in particular those related to The Avengers...

 who appear on the cover of the comic book Avengers: The Initiative

Avengers: The Initiative

Avengers: The Initiative was a comic book series from Marvel Comics. Written by Dan Slott and Christos Gage with artwork initially by Stefano Caselli, Steve Uy and Harvey Tolibao, the series dealt with the aftermath of Marvel's Civil War crossover Avengers: The Initiative was a comic book series...

#1.