In the absense of Ratchet and First Aid, Fixit becomes the Autobots main medic. It was Fixit who diagnosed and operated on the Ratchet- Megatron being to seperate them.
He became the leader of the Micromaster Rescue Patrol after their former leader, Stakeout, broke the rules one to many times and had gotten the Rescue Patrol in trouble with Autobot command.
Transformers: Robots in Disguise (2015)
Fixit was the mini-con warden on the prison transport ship that crashed on Earth. He acts a medic and base command for Bumblebee's team.