Harry Hedgehogs are small, quick-moving blue hedgehogs that appear in Super Mario World 2: Yoshi's Island and its remake Yoshi's Island: Super Mario Advance 3. If Yoshi gets too close to one, the hedgehog swells to a huge size, its spines sticking out. They cannot be eaten while in their defensive position. The 6th level of World 3, The Cave of Harry Hedgehog, was named after this enemy and prominently features the hedgehogs. They usually appear in cave levels.
Sūpā Harimannen(スーパーハリマンネン, meaning Super Porcupo)
Igipop(it's a pun of Igel(hedgehog) and Iggy Pop, the stage name of an American rock singer)
Attila il Porcospino(meaning "Attila the Hedgehog")