Enemies will activate spike through various means, such as by the Enraged buff, having a certain appendage destroyed, or by using an Art. Two notable Tyrants, Feliciano, the All-Seeing and Xair, the Cerulean Walker, activate their spike shortly upon engaging in battle. An activated enemy spike is typically shown either as an aura effect of blue spherical particles emanating from the enemy or the Enraged aura effect. Enemies may have one of two spike abilities: