Inner Lavos?
Be atleast level 45. If you are doing incredibly terrible, make your team Crono, Ayla, and Robo. Prism Spec Robo, and Sun Shade Crono. Ayla will have to make do with what accessories you have left. Also, equip Robo with the Crisis Arm. Make sure you have everyone equiped with a prism helm. Get as many mega elixers as possible. Don’t be afraid to use them or any items you have. They will carry over on New Game+ as though you didn’t use them. For the first inner form, you should attack the right arm first as it can heal. After that, take out the left arm. Shouldn’t take too long before it falls as well. The head will now start using powerful attacks, so keep healed up. Now go all out and finish him off. For the second and final inner form, get Robo to 999 hp and have him cast uzi punch on the left bit. It should be a one hit kill. This is essential, because magic heals it and you want to be able to cast Luminaire and Shock freely. Now in a couple turns the right bit’s defense should drop