Bumblebee

Bumblebee is the deuteragonist of the Transformers: Fates Intertwined franchise. Bee lost the ability to speak because his vocal communication was damaged by a Decepticon. Instead, he uses a radio to communicates through the radio in his system for his friends to understand him. Bumbelebee becomes best friends with several humans, with it being Sam Witwicky and Charlie Watson in the Cinematic Universe and e Spike Witwicky in the original comics. He  is one of the most loyal followers of Optimus Prime, despite being the weakest of the Autobots.