Chromia is well known to be the greatest sharpshooter on Cybertron, if not in the universe. She has not missed a target that she had a clear shot on for over 300 years. Its no wonder that when Arcee's spark was split into three, one of her three new bodies was named after the legendary fembot. Chromia served under the great Elita-1 for hundreds of years on Cybertron, opting to stay and fight Shockwave despite her beloved Ironhide departing for Earth with Optimus Prime. Though Shockwave was said to have left for Earth to assist a wounded Megatron, most Autobots know that he actually left for Earth after a major loss to the female Autobots. When Chromia discovered that Ironhide had been killed, and that not one bot or human said a single word about it, she suddenly lost the bubbly wisecracking side of her personality altogether. She traveled to earth to make sure the Decepticons were completely gone, and now hunts the remaining cons with Optimus' crew. Chromia took on the same alt mode as her lost love, Ironhide, both in tribute to him, and to remind others of the Autobot hero they lost.