Chemistro

Chemistro is a supervillain enemy of Luke Cage and the Avengers, whose name was taken by three different people. Curtis Carr, the first Chemistro, created a suit and gun that could fire a ray that rearranged matter into a different form. He created the gun for his company, who wanted to mainstream it, but Curtis sought to keep it for himself. He was fired, and, seeking revenge, used the alchemy gun against his former employers. In battle with the hero Luke Cage, Carr accidentally shot his own foot with the gun, turning it to steel. But it was unstable and crumbled to dust, leaving him crippled. Later he got a mechanical foot and changed his name to High-Tech, still using the alchemy gun as well as a gun tht reversed its effects. His brother Calvin then became Chemistro.

In the TV show, The Avengers: Earth's Mightiest Heroes, Chemistro was one of the villains in the Vault prison when the mass breakout happened. He was knocked out by Hawkeye while getting his equipment, and later was recruited into the Masters of Evil, where he battled Hawkeye one-on-one.