Black Dig Dug's looks like Taizo, but his armor is purple and his helmet has a red horn on it. He has a green drill.
Black Dig Dug has the same abilities as Taizo, including a same device like Taizo's Harpoon-Drill. He can dig in any direction, and if he sees the real Taizo, he'll shoot his drill at him and pump him till he pops. If Taizo shoot his Harpoon-Drill before Black Dig Dug do, a button appeared above them pushing at each other to get through him.