Here's a tough one for you...

Delath is one of Phi's familiars. He's 30ft long and can eat anything up to Mythril. He literally eats his way through the ground and has skin as tough as steel.

However I'd like to look at getting him a helmet. It's going to be size huge I know. Can we look at materials of titanium and mythril? With tough leather bindingg/attachments. Thanks!