Yes he is! Bumblebee is possibly Optimus Prime's most trusted lieutenant. However he's not the strongest or most powerful of the Autobots, Bumblebee more than makes up for this with strong determination and bravery. He would gladly give his life to protect others and stop the Decepticons. He was badly damaged in battle, Bumblebee unfortunately lost the ability to speak verbally, however he can still communicate over inter-Autobot frequencies by playing various audio clips from our media on his radio.
He can also communicate with the Autobots' human allies and his friend, Sam Witwicky in this way too. He is also known as N.B.E-02 and has operated under the codenames ZB-7, Goldwheels and B-127. He is also partnered with the Dinobot Strafe, and is brothers-in-arms with fellow Autobot Hot Rod. Bumblebee decidied to remain on earth and protect all humans, he likes to hang around our garage and love seeing people! Be sure to visit him and thank him for saving us form the decepticons.
Transformers is a media franchise produced by American toy company Hasbro and Japanese toy company Takara Tomy according to Wikipedia.