-def is probably L!ike's best bane in my opinion, he doesn't want to lower his res since he has a DC weapon, and a hp bane will bring his hp to 37 which isn't the best
Not at all. You especially never want to reduce Ike's defense, because he gets doubled quite often, which means that with a def bane he can sometimes receive 6 more damage from an enemy, which will more often than not cost him his life.