The Skater Bomb (スケートボム Sukēto Bomu , lit. "Skate Bomb") is an Emblem Heartless that appears in Kingdom Hearts 358/2 Days.
Journal Entry
Kingdom Hearts 358/2 Days
These mid-sized Heartless begin a countdown to self-detonation if you deflect their head-butts with a block.
Strike them during the countdown to send their payload hurtling into other enemies.
TIP: Ice-based attacks like their explosion can freeze you, robbing you of the ability to move.