A horned beast with the annoying habit of casting Life 3 on its allies.
Like most enemies in the Magitek Research Facility, it has high physical defense; however, unlike other enemies in the section, this enemy is healed by Thunder-elemental attacks. Other level two spells like Fira or Blizzara can be effective against this enemy. Alternatively, Defense-ignoring attacks like Raging Fist, Drill, and Fang can be used to easily defeat a Destroyer.
As a side note, the Destroyer can cast Reraise when alone, but lacks the MP necessary to do so, resulting in a wasted turn.
If only Destroyers are alive: Attack (66%) or Reraise (33%)
1st Turn: Attack (66%) or Poison Strike (33%)
2nd Turn: Attack (66%) or Nothing (33%)
Destroyer from Final Fantasy VI appears as an enemy in Final Fantasy Record Keeper