Verse 2 - TFA
Ambulon was a Decepticon 'Ward Manager'. Trained as a medic, the supposed gestalt mech was put out when they wouldn't let him do anything asides from being, well, the butler of the medbay, to put it nicely. It went like that for stellarcycles, until he was sent to Chaar.
There, he met the DJD (horrible fraggers!), Team Chaar (briefly. Strika just yelled at him about worthless fraggers not worth saving.), and an Autobot traitor: Pharma.
Pharma was twisted; Ambulon knew that from the beginning. He had patience and the background of a Knight of Cybertron, so he didn't flinch when Pharma first thrust his chainsaw servos into his face.
It was three stellarcycles later until "The Accident", heavy air quotes there.
He was caught repairing someone he wasn't supposed to. He wasn't supposed to be repairing anyone, period, but he was repairing an autobot, of all cybertronians.
Pharma 'tripped', and cut him in half, length wise. He had blacked out, only to online again a few megacycles later.
He left the 'Cons after another stellarcycle.
Verse Tag: TFAmbu