Crystal Healing

The decepticon was this huge robot that was made up of several parts or tractors and he basically sucked in everything. He helped destroy the top part of the pyramid b4 he died.

The autobots I'm talking about helped Optimus by energizing Jetfire's body onto Optimus in the end. It was a blue autobot and a yellow autobot. The yellow one was in Part 1 though. He was some yellow hummer who helped heal other autobots. I have no idea what the blue one was though.

Can anyone help me with the names of these autobots? It would be greatly appreciated, Thanks!
And the decepticon**