Hardstone is basically that Wrestler character.
Since he's a wrestler, he beats people up with A GIANT CHAIR. That's right.
He transforms into a Firetruck-Without-The-Ladder/SWAT/Hazmat truck type thing.
Alonia, and the Unnamed group that makes her up, other Autobots, random superheroes/heroines, and other random people on the Side of Good, but mainly the Autobots.
Grey, and a shade of Blue.
He was slowly being swallowed by Kirbycron, in his digestive system, when suddenly the Leader (the one that forms Alonia's chest) came out of nowhere, flew in, threw a net down, where he caught it, and then the Leader flew out, but shot her way through random Asteroids that were going in Kirbycron's mouth.