Arcee

Arcee who was a former Autobot Officer on Cybertron is the physically weakest of Optimus Prime's crew, but she's also Optimus's most reliable soldier, his go-to gal when he needs someone he can count on. Whatever she lacks in physical form she more than makes up for it in force of personality. She is tough as nails at all times, always ready with a snarky quip even in the face of deactivation, not afraid to bend the rules every now and then, and seemingly never, ever scared.