The least likely can be the most dangerous.
Small, eager, and brave, Bumblebee acts as messenger and spy. Due to his small size, he dares to go where others can't and won't. He idolizes the bigger Autobots, especially Optimus Prime and Prowl, and strives to be accepted. He is the most energy efficient and has the best vision of all the Autobots. He can go underwater for reconnaissance and salvage missions. Although physically the weakest Autobot, his stealth more than compensates for this inadequacy.