Once Elita-1, a lively Autobot Academy cadet, Blackarachnia was abandoned to alien spiders on Archa Seven, transforming her into a hated technorganic. Her loathing for her organic parts drives her to madness, and she will crush anyone in her path to rid herself of them. This transformation fuels her hatred for the Autobots and leads her to ally with Megatron, though her loyalty is questionable. In her new form, she uses 'cyber venom' to paralyze foes and can mimic other Transformers’ abilities.