Atomic Robo, Volume 10: Atomic Robo and the Ring of Fire — Brian Clevinger

Tesladyne was seized by a top secret government agency and transformed into Task Force ULTRA to bring global super science firms under the direct control of the military industrial complex. Escaped Tesladyne scientists went underground and are hunting for Robo. Oh, and giant monsters are threatening to consume all life on Earth. Sure was a nice planet we had for a while there!