Teflon? If Marcus needs a strong coating to withstand heat and stress for something, he could collaborate with Shiro. While he may not be as intellectual as Marcus, Shiro's familiar with weapons technology and things of that nature.

Maybe try Cerakote.

[quote=NarcissisticPotato] What game is it that you're semi-professional in? :O [/quote]

Probably World of Tanks.