Tenzil Kem (Earth-1: Post-Crisis)

"Ever since I had to team up with Matter-Eater Lad, my sense of what's normal is a little fucked up. [...] I once saw him eat an entire Wendy's Restaurant. Vigilante ate a restaurant? No, Matter-Eater Lad. That's his power, he can eat anything. They took too long with his fries or something. The guy's a fucking lunatic."

- Peacemaker and Clemson Murn

Matter-Eater Lad is a superhuman individual that has the ability to eat anything.

Biography
At some point, Matter-Eater Lad teamed up with Peacemaker. The former also ate an entire Wendy's restaurant, with Peacemaker vaguely remembering his order took too long and it enraged him.

Powers

 * Superhuman Digestion: Matter-Eater Lad has the ability to eat anything at any size and material.