Invincible.

A tall, muscular human with fiery red skin that glows with molten lava patterns. His hair resembles flowing magma, and his eyes burn with an intense orange hue. He wears a suit that is resistant to extreme heat, adorned with symbols of flames and magma.

Confident and brash, Magmaniac thrives in the heat of battle, often underestimating his opponents. He is fiercely loyal to those he cares about, especially Machine Head and Tether Tyrant, but his arrogance can lead him to make reckless decisions.

Once a loyal bodyguard for Machine Head, Magmaniac found himself embroiled in the chaotic world of supervillains and heroes. His relationship with Tether Tyrant added complexity to his life, but his magma powers made him a formidable force in battle. Summoned by Isotope to fight for Machine Head, he faced off against Invincible, using his lava blasts to melt Titan's rock skin. However, his arrogance led to his downfall when Invincible, enraged, ripped him apart with a single punch. Even in the face of defeat, he continued to battle the Teen Team, attempting to burn Monster Girl while fending off Rex Splode's explosive attacks. His resilience was evident as he protected Machine Head from Black Samson, seemingly unaffected by the chaos around him. Ultimately, his fate was sealed when Shrinking Rae grew inside him, causing him to explode in a spectacular display of power.