Dummy esper

Dummy esper is an unnamed enemy in Final Fantasy VI that seems to have been meant to be another esper for Kefka to battle in Thamasa. It uses the Guard sprite probably because it is the first sprite in the list and the sprite wasn't changed. The enemies stats and AI script are also simple and cause the battle to freeze soon after launch.

Battle
The battle seems to have been designed to be launched during the same time period as the unnamed esper fight (with Kefka using the same stats and equipment). Active party is hidden and Kefka is placed in the middle of the screen. The enemy will utilize its first strike ability to attack Kefka once; after which the game will freeze since Kefka doesn't have any battle commands or AI script to continue the fight.

AI script
1st Turn: Attack (100%) End first wave of attack End