Ball o' String Wario

Ball o' String Wario is one of Wario's many transformations in the Wario Land series. Getting covered in Wormy's spider silk in Wario Land 3 turns Wario into Ball o' String Wario, a rolling yellow yarn ball. Wario will roll back and forth across a course, bouncing off walls, until he eventually unravels back into Wario. In this state, Wario can break through some blocks. Also, this seems to be a combined ability of Snowman Wario and Flaming Wario.