Big Metalun is a big metallic cyclops. His only attack is to curl up into a ball and roll full-force into Kirby. Although this is is only attack, every time he takes a step rocks will fall from the ceiling. This forces Kirby to be on his toes during the entire fight, not just when Big Metalun attacks.
Big Metalun's body is a huge chunk of bluish plated metal (possibly steel or iron) with a pair of stubby arms and legs. He has a single blue eye covered by a thin sheet of metal atop his head.
Big Metalun, seeing as how simply walking creates rocklsides, also weighs a great amount. This girth makes him walk lethargically but makes his body near impenetrable to many attacks, meaning the damage all of Kirby's moves used on him are dramatically reduced.
- Even though Big Metalun is very heavy, he oddly doesn't need to be super inhaled.