List of Marvel Comics characters: I

Icarus (Joshua "Jay" Guthrie) is a mutant superhero. He was a member of the student body at the Xavier Institute and a member of the New Mutants training squad. Jay was the son of Thomas and Lucinda Guthrie. Thomas dies early in Jay's life due to black lung, developed from working in local Kentucky coal mines. Jay's older siblings Sam (Cannonball) and Paige (Husk) are mutants as well, and both have been members of the X-Men. When he himself developed mutant powers, he hid them from his family. When performing in his band, he exposed his wings to the crowd as a 'stage gimmick'.

It was later revealed that Jay was actually tricked by William Stryker into giving up his wings, in exchange for his friends safety. Jay called him to inform the location of his friends, Stryker betrayed him by planting and activating a bomb to kill the students. Many of the de-powered students died in the blast. When Jay confronted Stryker, Stryker confessed that not only was he responsible for the bombing on the bus but he was also responsible for the death of Julia Cabot, having given the other Cabots the armor. Stryker then proceeded to shoot Jay. Icarus was then shown dying with Nimrod deciding whether or not to finish him off. Nimrod left Jay alone, calculating that he was already mortally wounded. After that, Icarus was found dead by Ms. Marvel and Iron Man in Stryker's church with his hand in a position of writing, he was able to write "NIMR" plus half of the "O" with his own blood before he died.

Icarus is among the many mutants who are resurrected by the Five following the foundation of Krakoa as a sovereign nation.

Believed to be descended from the ancient race of Cheyarafim mutants, Icarus possesses red feathered, angel-like wings which allow flight and produce regenerative enzymes allowing him to recover from normally fatal injuries. His voice is capable of producing sonic frequency beyond the range of human capability as well as creating multiple sounds or voices at once.

An alternate universe variant of Icarus from Earth-295 appears in Age of Apocalypse. This version is a servant of Mister Sinister who possesses artificial wings and is later killed by Magneto.

The Icemaster (Bradley Kroon) is a supervillain created for one of a series of Hostess advertisements; his advertisement debuted in December 1979. He later entered the mainstream comics continuity as a member of a new incarnation of the Masters of Evil, created by Kurt Busiek and Mark Bagley.

Although how he gained his powers and abilities is unknown, Bradley Kroon had plans to create the next ice age as the Icemaster. He had frozen much of New York until he encountered the Human Torch. The Human Torch defeated him by throwing Hostess Fruit Pies to him, inducing his surrender.

Icemaster later appeared as a member of Crimson Cowl's Masters of Evil. In the story's plot, Icemaster is defeated when Hawkeye tricks Scorcher into accidentally blasting him. Before that, Icemaster accidentally hits Man-Killer, one of his own teammates, with an ice blast.