To hit its thunder weakness, have Maxim or Tia learn Flash (600G) from Tanbel's spell shop
Give Maxim the Battle knife from Sundletan and Guy the Kukri from Tanbel's weapons shop, and the IP skill Thunder blast can hit the weakness
Fire is halved, so don't use Spark or Flame attack on the Whip
Its most-used move is Buster attack, a fire attack on the whole party (power 120). It drains everyone's HP, so heal early.
Sleep stinger is a fire attack on 1 target (power 80) with a 40% chance of sleep. Keep Awake from Tanbel's item shop on hand, and wake Tia, your healer, right away if she falls asleep.
Status ailments have no effect, so don't spend turns on Drowsy or Confuse. Attack and heal instead.
Summons a Slave (HP 150). The Slave casts Strong on all of its allies.