Airachnid was Megatron's former First Lieutenant after Starscream. She is Arcee's arch nemesis. She questioned Megatrons right to lead the Decepticons when he tried to re-awaken Unicron. After she went rogue, she found an Insecticon scout, and then later, it's hive. Airachnid was later put in an Insecticon stasis pod by Arcee and is currently under Autobot possesion.