A scientist who specializes in building or maintaining robots.
If he is a Mad Scientist, this skill will probably manifest as an ability to effortlessly manufacture Mecha Mooks in bulk. Robots don't have to be his only area of expertise (as a mad scientist, he's probably also an Omnidisciplinary Scientist), but he's a Robot Master if robot-making is far and away his most commonly displayed skill. [...] [tvtropes.org]