Bumblebee
From Equestripedia, the Archives of Equestria!
Bumblebee is an Autobot, presumably from Cybertron and good friend of Optimus Prime and Jazz.
Behind the scenes
Bumblebee was set to appear in Transformers x My Little Pony, or at least he appeared on the cover art of the canceled comic book. He, alongside Jazz and Optimus Prime looked puzzled as the Mane Six circled around them.
