Lava Lord

Lava Lord was originally lord of the underworld where Skullmaster was exiled. He was sealed in solid rock by Skullmaster after the two battled for dominance and he was defeated. A while later he was freed when Max and crew destroyed the Crystal of Souls since they needed his help to stop Skullmaster resetting time. Using his loyal Lava Beasts and Magus - his lava-powered war machine - Lava Lord then made a bid for power again, plunging the underworld into chaos.