Transformers Prime Season 2 Episode 15 Toxicity

Toxicity. Taking place at the same time as “Tunnel Vision”, “Triangulation” and “Triage”, Bulkhead goes to a volcanic island on the Equator to find the fourth and final Iacon relic, only to discover that it is a piece of ‘Tox-En’, a form of highly toxic Energon. As he tries to dispose of the Tox-En by throwing it into a volcano, he is confronted by a group of Insecticons led by the fierce Hardshell.