Bumblebee (Transformers RID 2015)

Bumblebee, a young warrior with everything to prove, became the leader of a new team of Autobots after the death of Optimus Prime.

History
After returning to Cybertron, Bumblebee did his best to maintain peace in his home, taking a position in the Elite Guard as a lieutenant.

His eventual return to Earth began on a mission where Cadet Strongarm accompanied him on a Ride-Along where they responded to a "2-1-1" in progress, caused by the rogue Autobot Sideswipe.

Optimus Prime BB Point
During the chase, Optimus Prime appeared to Bumblebee in a vision, within a small pool of water just in front of the Optimus Prime memorial statue, and silently pointed towards the Museum of Cybertron and Earth History. Strongarm was unable to see Optimus Prime, and as Bumblebee was distracted by what he saw, he pursued and apprehended Sideswipe on his own. Unfortunately, his inexperience as a cadet allowed him to make the mistake of slamming Sideswipe into the Prime statue, causing it to collapse to the ground on top of Bumblebee.

As soon as he was able to shake off the rubble and his vision, he rushed to the museum to find out what Optimus was trying to tell him. While searching for any clues that might help him understand, he stumbled upon a Space Bridge, with its coordinates already set to a location on Earth. There, Optimus Prime appeared to him again and told Bumblebee of a new mission and a dark threat.

Due to Ride-Along Regulation 201, Section 4, Strongarm was required to accompany her superior officer for the entire shift, so she followed Bumblebee into the museum, handcuffed to Sideswipe. Bee revealed to him that she had been following a trail laid out before him by Optimus Prime himself. The conversation was interrupted by two guards approaching their location and he told her and Sideswipe to try and disable the stasis fields around the Bridge.

where Strongarm and Sideswipe soon followed.

Stranded Autobots
Shortly after being stranded on Earth, it became clear what new threat awaited Earth. A maximum-security prison ship from Cybertron had crashed and the inmates were on the loose. Their caretaker, the Mini-con Fixit, shows up just before Underbite, the city-devouring Decepticon.