Blot

If their one bot that most Cybertronians discriminately dislike, It's Blot. Many bots dislike and bully him for his stench and the ooze he produces,. and it only seems his Terrorcon teammates seem to give him some what respect, though it's little. 

He also tends to eat unstable isotopes, which he finds delicious.

History:

Blot was forged during the late Zeta prime era, and used to be bullied in his youth, disliked by most bots. During the great war he was put in as a member of the Terrorcons, Who seem to be one of few bots who didn't bully him(as much)

He was sent with his team to retrieve the enigma of Combination. After fighting against the Torchbearers, Blot and his teammates accidently combined to form Abominus, and defeated Victorion(who combined before they did) and got away with the enigma.

He and his crew were training with Monstructor and the other Combiners during Megatron's tour of the facility they were training in. During the ensuring battle against the Autobots attacked Victorion along with Devastator, Liokaiser, Dinoking and Monstructor before being swatted away by Volcanicus[Operation: Combination]

Notes:

He's based on G1 Blot

He shares his bodytype with Gorgeclaw, Icepick, Scowl, Doryu and Goryu