It is the toughest enemy in the Serpent Trench, as it has a 1/3 chance of countering any damage not inflicted by the Attack command with Gigavolt, which is very powerful and could possibly KO a party member even if they are at full HP. It is recommended to simply use physical attacks, or have Gau use the Belmodar or Spritzer Rage so he can absorb Gigavolt. Besides Gigavolt, they are not terribly dangerous and have fairly low HP.