I couldn't finish 'em. Looks like this's gonna get complicated.
Cu Chaspel appears as a bonus boss from Final Fantasy Crystal Chronicles: Echoes of Time. He fights exactly as he did in Final Fantasy Crystal Chronicles: Ring of Fates, starting off by either using a regular attack, an aerial spin attack that can inflict Stun as well as knock back players, cast Bio, or use a Curse attack that either inflicts Weakness or Blind.
Once his HP is reduce to about 1/4 to 1/2, he will start cloning himself, at which point the player will have to find the real Cu Chaspel in order to damage him while dealing with the clones. The battle is more difficult than most other fights due to Cu Chaspel having no weak points.