BIG STUPID DRAGON!! A ROBOT ONE!! CHRONO TRIGGER!!! HELP!!

Yep, I can't beat the SECOND SUPERLOUSY RoboDragon.
Any strategy? I attack him, of course. In the head. And he keep healing himself.

HELP. Please.

Destroy the head, dont use magic.

I readed the menu already. But I've won him, and I was on my way to destroy, delete, kill and CRUSH this messege. I'm in the Heckran Cave now.

Thanks.