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Spike Guard is Mini Bowser Jr.'s special ability in Mini Mario & Friends: amiibo Challenge. The move allows Mini Bowser Jr. to harmlessly travel across Spike Traps. The move needs to be used in Level 9 to access Mini Bowser Jr.'s assigned amiibo Door in the bottom right, after creating a Pink Block crossing at the very top to guide Mini Bowser Jr. to a turnaround, then disassemble said Pink Blocks to allow the toy to fall to the Spike Trap near platform the door is situated on. This door leads to Air Tumble Rumble, where Mini Bowser Jr. frequently performs the Spike Guard to advance through its levels or reach bonuses positioned across Spike Traps.