Hotmetal the Plumber is a parody of Coldsteel The Hedgehog created by FireMarioFan and appears in the songs Punk and Death. He is also Mario Mix's version of Coldsteel. Appearance: Hotmetal parodies Coldsteel in design as he is an edgy drawing of Mario as a fan of punk rock as he wears a black t-shirt with a middle finger in red, jeans with a brown belt, and is seen smoking a cigarette. His hat also has a pentagram symbol on it. Knows Morio, Mawio, and Mr Retro (as friends).