Since I went out skating recently, I'm gonna give my personal rating of how the blorbos would do in the rink :D
Alex: Although he's never really skated before, he takes to it quickly and is zooming around the rink in less than 20 minutes. He likes being speedy, and racing everyone else, however his lack of experience means he stumbles a lot and has a tendency to bail for the outer wall. His primary shoes would be rollerblades. 6/10
Zee: Probably has some decent skating knowledge/ability from his time before his incarceration, enough to keep him upright but nothing fancy. Tries to figure out tricks, falling on his ass a lot in the process. 2.5 hours in he inexplicably figures out how to land a midair spin. When he gets cocky and tries to do it with his non-dominant side he wipes out really hard and has to sit out the rest of the day bc he bruised his tailbone. Primary shoes would be high top skates. 7/10 for being unafraid to fail while learning tricks
Lucy: She's mostly casual, preferring to keep it simple and not try (and fail) to show off. Most likely to be skating & chatting alongside anyone in the group who isn't discovering new ways to give themselves bruises. Being smart, she'd likely give anyone ahead of her a wide berth, however, this would unintentionally lead to her cutting off the path of a less skilled skater behind her and getting run into, wiping them both out. Primary shoes would be derby skates for the added foot support. 8/10 for being the least chaotic skater in the rink
Donovan: He would mostly sit at the booth guarding their stuff & recording the others fucking around. He'd have to be coaxed out, and once in the rink he'd likely do slow laps around the wall, UNTIL someone puts on the right music. Pulled in by the urge to groove, once he gets going he'd be unstoppable, gracefully skating circles around the others and showing off his moves. God help anyone who he buddies up to dance with because the bloodrush alone would be enough to topple an experienced skater. Primary shoes would be high top skates. 11/10
Simon: He used to go skating all the time with his family, and after a bit to get used to it, he's back in his element. No fancy tricks, but steady and confident on his feet. Loudly and enthusiastically belts out the song lyrics he knows as he skates along. Races Alex in the speedskating round, and wipes the floor with him despite his center of gravity being fucked up. Primary shoes would be rollerblades. 6/10 (9 in my heart bc I also sing outloud)
Blacksuits: I honestly have no idea. The visual of someone skating at you with a shotgun is quite menacing, but knowing the recoil would send them flying backward ruins the scare factor. 3/10
Furnace: if you took him out of the tube he'd turn to a puddle of foul-smelling goo with a pair of skates in the middle. 9/10 bc fuck that guy, -1 since I feel bad for whoever had to clean his remains off the floor.
The dogs: disregarding the difficulty of strapping each of their feet into a skate, can you imagine how fucking funny it would be. A whole pack of monstrous hellhounds try to chase you down only to realize they are either completely unable to gain traction OR have no idea how to balance themselves and promptly eating absolute shit 2.5 seconds later. 10/10 for how embarrassing it would be for furnace staff and how funny it would be for everyone else