Airachnid is a Decepticon from Transformers Prime. She is famous for her cruelty, even towards her fellow Decepticons.
Transformers vs Dinsey and Non-DIsney Villains
Thrax was sent by Megatron to gather an energy core from her ship. Thrax managed to grab it when Airachnid returned. She lunged at the virus only to be swatted back. Using his fire claw, Thrax managed to set her ship aflame where she presumably perished in the explosion.