Infearno is a Minifigure and villian released in the Ultra Agents theme in 2014. He later reappeared in 2015 in Ultra Agents: The AntiMatter Missions.

Infearno's head is Bright Red, with printing depicting yellow eyes, an angry grimace, and cheekbones. His head has many lines across the face, which gives him a burned appearance. He wears a new and unique headgear piece in Transparent Orange, which makes it appear that his head is on fire. His torso is Dark Red, with armor printing that features a boiler and tubes. Flames are visible inside the armor. His back printing features a similar pattern with the back part of the boiler. Most of his torso is obscured by some bulky red armor, using the same mould as the armor of the Galaxy Patrol and Alien Avenger. His armor piece has many parts connected to it, such as a black piece on the back, with Transparent Orange cylinder pieces, to represent fuel. It also has silver mechanical arms on the sides with flames coming out of the ends. His arms are unprinted Dark Stone Grey and his hands are Bright Red. His legs are Dark Red and continue the armor printing. His accesories include no more than his flaming hoverboard, which includes a Dark Red surfboard with Bright Red propellers at the sides, a large flame in the back and a flamethrower in the front. He is also shown using charges of dynamite in his Set appearance.