Martin and Mac in “Unfinished Business”

I'm thinking about getting an Adamantium helmet.

Yeah? That’s the stuff the Wolverine skeleton’s made out of, isn’t it?

Yep. Hardest metal in the world.

Indeed, indeed yeah. Sadly of course, a fictional metal. So that would probably reduce its effectiveness in a crash-style scenario.

Good point. Good point. Still the hardest metal in the world though. [Martin leaves.]

Fictional.