Later, during Kang the Conqueror's war on earth, a being of immense power entered the Solar System. This was the "triple evil" which Tremont had supposedly founded the Triune Understanding to defeat. Powering up the Triune's spaceship, Tremont and the Avengers traveled to face the being. During the battle, Tremont's true reasoning became clear: he sought the power of the "triple evil" for his own. In the past, he had stolen the triangle power of 3-D Man, and resurrected his two dead brothers as Lord Templar and Pagan. He then formed the Triune Understanding to enable him to find the other triangle fragments of power. The "triple evil" contained the final power he sought. During the battle, Tremont killed his brothers and his followers by drawing all their power and life energy into himself, intending to take the power of the Triple Evil and use it to become a god to those on Earth, but he ultimately lost control of the immense power. Triathlon, though, was able to channel the power and defeated the "triple evil", realising that the power could only be controlled by one who strived for others rather than for themselves. With Traithlon now in control of the pyramid, the Avengers then returned to Earth and ultimately defeated Kang and the Scarlet Centurion in their bid to take over the planet. Following Kang's defeat, Triathlon dissolved the pyramid's remaining energies to prevent it being any further threat, subsequently sacrificing the last of his power to restore the 3-D Man and his brother to their independent forms. When the Avengers later reorganized under a United Nations charter, Triathlon left the team along with some other members.