During the Shadowland storyline, Chemistro was seen as member of Flashmob (a group of former opponents of Luke Cage consisting of Cheshire Cat, Commanche, Dontrell "Cockroach" Hamilton, Mr. Fish II, and Spear) when they confront the new Power Man on the rooftop.
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He joins with the Hood's gang in an attack on the New Avengers, who were expecting the Dark Avengers instead.
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Calvin's alchemy gun was turned into wrist blasters by the Wizard who sent him and the Wrecker to attack Iron Man and Jim Rhodes during the "Acts of Vengeance."