Spike Tails (often called Bone/Fossil Fish) are environmental hazards that appear in Pumpkin and Deep Sea. They appear periodically during the match at their designated spots (around the central tower in Pumpkin and in the large, sandy area in front of the Castle in Deep Sea). Players can be hit by Spike Tails, which can damage players for a moderate amount of health and causes them to be knocked back. Players standing in the area they appear in will be notified of an attack by Spike Tails via a screen shake.
- Spike Tails cannot be blocked, even with Super Guard active. If Iron Phalanx is active, any participants hit will no longer be under its effects (including the guard state).
- Spike Tails move along a fixed path when emerging.