Yeti is weak against Fire and Poison. He attacks with his physical, his special attack Tackle, and Ice Storm. Halfway through the battle he uses a Green Cherry to increase his stats, and starts attacking with Surge and Snowball. The AI script below shows Yeti is meant to gain the Regen status after using the cherry, but due to the way Regen works in Final Fantasy VI, enemies that are immune to Sap are also immune to Regen, so Yeti will not gain the status though the game attempts to cast it.
A glitch involves having the Yeti use Jump, and using the Super Ball, in which the enemy is stuck in this state and the player must use another Super Ball to make the enemy reappear.
Another bug consists of having the Yeti poisoned and defeating him in mid-air when he uses Jump. Although the player has won the battle, the entry will not appear in the Game Boy Advance's bestiary.