This is one of the co-first bosses of Blackwing Descent along with Magmaw. Omnitron Defense System is a council type fight comprised of 4 bosses: Arcanotron, Electron, Magmatron, and Toxitron.
Since which boss is active at the start and the order in which they activate is random there is no set strategy for this fight, youll need to be adaptable. They will be active in pairs and there are six or so different combinations so you just need to be ready to deal with what they throw at you.
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