Lightning

-Bumblebee and Stinger are separate bots. They're both evil in this AU, Mea never meets the Autobots but she and Stinger don't join the Decepticons either.

-Mea lives with her biological father (who is a scientist/engineer) instead of her mother and step-father. Mea's dad used to work for the Autobots alongside Fowler in this AU and then he pulls a Silas and created Stinger in Bumblebee's image.

-Somehow, Mea's dad acquires a spark that was intact and uses it to power Stinger. Stinger is brought to life and is aggressive. Mea's dad keeps him captive, keeping a close eye on Stinger and observing his behavior.

-Whenever her dad isn't around, Mea sneaks in to Stinger's cell to talk to him. Although Stinger was aggressive towards her at first, he eventually warmed up to Mea the more she visited him.