Octane is considered vile, even by Decepticon standards. This triple changing bully is a cheat, a liar, and a coward who thinks only of himself and can't be trusted any further than Megatron can throw Devastator. The only reason that this inveterate thief is allowed to continue functioning is that he has an uncanny ability to locate stores of fuel for his fellow Decepticons, and is usually able to spin a fairly convincing excuse for why he was unable to assist them in their latest battle. As annoying and frustrating as he may be to work with, most of his allies will grudgingly admit that he does perform his job as a fuel transport quite well—if he could just get over his annoying habit of making them beg for every drop.
He is sometimes called Tankor.
His alt-mode is a Fuel Tank Truck / Jet (possibly KC-135 Stratotanker).