Finally sat down and read IDW's MTMTE and this is the result.

An ultralight, originally intended for use in mapping out abandoned warehouses and caverns silently. Already beginning to question the Autobot cause, being sent as a scout for the Earth conflict only cemented his eventual defection.

However, a Decepticon deserter kidnapped him to use as a bargaining chip, selling him to a mech that kept him for many, many years. Eventually, the D.J.D came for his captor. His rescue was, to put it bluntly, a way to keep the crew entertained. To see what the tiny mech would do amongst their ranks.

He proved himself rather swiftly, when he helped track down the deserter that abducted him in the first place. While he couldn't do much damage on his own, the encounter revealed just how...creative and violent he could be.

While he was nothing more than a supplier at first, Spectrogram ended up as a part of the team. Mostly assisting Nickel, but being called on for recon when needed.

(Small text reads:
Symbol ground off by deserter that held him captive for many years. Intentionally didn't replace it.

Wings can fold in. In flight, this is used like a sparrowhawk. For maneuverability and to escape. Otherwise, this is simply for convenience. After all, they're very fragile compared to most cybertronians.

Can and will bite.

Changes wing paint often. Usually bat themed.)