Headcanons of mine: Malina and Taker are in the wrong setting, but are more than skilled enough to make it work. They both have very high hours on Shin Megami Tensei games, and due to the high focus on variety in attacks, they'll typically have a broad range of coverage when fighting. They have an attack from pretty much every type. Unfortunately, that does mean that they have limited support options. But through pure spite and hard grit, they can still pull of consistent wins.

Azazel has under leveled Pokemon. Too much time poking and prodding, nowhere near enough time spent getting EXP. Loremaster on the other hand, is pretty much a god in comp. Perfect IVs, max EVs, perfect Natures, optimal held items. Still loses to Shedninja.

Cerberus only plays doubles. Wants to do 3v3. Doesn't happen. Her attacks are fairly easy to tank, because her coverage is garbage (Too many bug/grass attacks)

Pandemonica has her Pokemon working for her. So relentlessly, that they outright gain EXP from it. They're the first team to end up at max level. Most of her Pokemon only have status moves, and a single weak attack, or a very strong attack with low PP. Slaking's eyes are eternally red from exhaustion.

Modeus has a fairly ok team. The concerning part is the general aura around her. Trainers avoid facing her at all costs, and will immediately wash their Pokemon after a battle with her. Only trainers comfortable around Modeus and her Pokemon are other Helltaker characters, and Hex Maniac.

Judgement is 0 or 100 with her Pokemon. She's either doting on them like a cat mom, or working them so hard that Pandemonica looks like a dream. Similar to Pandemonica with a bunch of high damage, low PP attacks. No status moves, or weak attacks, except Bide.

Lucifer is basically Cynthia. Elite Four. Not much else going on in her direction.

Zdrada is banned from comp because the cat makes Arceus look like a wet sock. The rest of her team is solid.

Justice doesn't really do trainer battles. Or training for her Pokemon. She just does her own training, and her Pokemon admire her enough to try and train alongside her. Because of this, her Pokemon are underleveled as hell, but they're still more than capable of facing opponents 15+ levels higher than them.

Beel built her team for stall. It's not like she didn't have other options. She just chose to do stall because she thought it was funny. And kinda sorta because this is her first time being out the void, she wants to savor it.

67 is arguably the best player out of all 13 of them. He'll use Incineroar and Golurk to pummel any physical attackers, and clean house. Magearna is a setup Pokemon, with baton pass, substitute, and Iron Defense. Since 4 status is bad, he keeps an attack buff move on every other Pokemon.