Final Fantasy XIV - Mountain Buster Bock T-shirt by Srahhh - $24.13
Various forms of Titan have shown up in Final Fantasy games over the years as summons and enemies. In FFXIV: A Realm Reborn, the beast makes another appearance as the primal of the earth and one of the hardest fights currently in the game. With a dark color with a bold glow, a bock seems like the perfect beer to represent the monster.
The design is available in multiple colors and styles on Redbubble.