Pseudo

Pseudo is a ladybug grub like Decepticon  Shifter who was one of the prisoners aboard the Alchemor

Season 1
Pseudo was imprisoned on the Alchemor for selling secrets to Cybertron's off world enemies. After the ship's crash, he was freed from his stasis pod, whereupon he discovered the ghost town of Edmondville, which had long since been deserted. It would have made the perfect base for the spy to hole up in, if not for the presence of the Autobots who had arrived on a would-be vacation. Before Pseudo could quietly eliminate Bumblebee, however, the Autobot sensed his presence, driving him back into hiding.

The Autobots quickly began combing the town for the Decepticon, prompting Pseudo to use his shapeshifting powers to try and incapacitate them. When this proved fruitless, he scanned the forms of Bumblebee's team and first took the form of Drift in order to sow confusion. Unfortunately, Pseudo was unable to mimic Drift's Mini-Conpartners, forcing him to flee into a nearby mine. There, he took the form of Strongarm, Bumblebee, Sideswipe, only to finally be corned in the form of Grimlock. This time, he was unable to successfully masquerade as an Autobot again, so he escaped using Sideswipe's form's natural agility. Fleeing the mine, he attempted to flee by taking the form of the town's derelict steam engine, but he was stopped when the Autbots threw Slipstream and Jetstorm, destroying the tracks he was running on. Pseudo crashed, whereupon he reverted to his true form and was immediately arrested.

Season 2
Pseudo's stasis pod was later taken back to Cybertron by Optimus Prime, Windblade and Ratchet in Decepticon Island (Part 2).

Personality
Unlike most Decepticons who fight  the Bee Team, Pseudo is very cold but also very calm.

Powers and Abilities
While Pseudo doesn't have much in a way of abilities, he can scan his enemies and be able to shipshape into anyone and anything to blend in, he also has the powers and abilities of the being he takes form of, he can also shipshape from that being to another.

Trivia

 * Pseudo is the second Decepticon to impose as an Autobot through shifting. The first is Makeshift.