Tox-En

Toxic Energon is a Iacon relic that is a toxic form of energon. Toxic Energon has the same effect as Dark Energon but it is toxic green and in contact , it can kill any cybertronian, not revive.

Fiction

Prime cartoon

Hardshell and a group of insecticons go to the equator to find the final Iacon relic. Bulkhead find it before the insecticons did. Bulkhead found toxic energon or he called it (Tox-En) for short. Bulkhead went to the top of the volcano to dispose it before Megatron use it as a weapon to destroy the autobots. He threw it to Hardshell and Hardshell fell with the Tox-En. While Bulkhead went in the groundbridge , Hardshell shot Bulkhead in the back and Bulkhead flew in to the autobot base wounded.