The HP limit is 260.

Heal Mythril Kid, Hurt Pirate

Maria 240
Mindu 260
Gareth 260
Emperor 260
Pirate that hits on Maria 240
"What's Mythril? Is it yummy?" Kid 240

Quote Originally Posted by boys from the dwarf
heal gareth. hurt maria. BTW who is the mythril kid?
In Altair, once you learn the Keyword "Mythril" talk to this kid outside Altair and he'll ask what's mythril.