Oh yea, I thought it would be fun to make a tier list, because I love making those. I thought it would be fun to do one based on Oros the Joyful, specifically who would make the best partner for her. I primarily considered player synergy, personality synergy, and fighting synergy. Or in other words:
-How well I know the player.
-Chemistry between the character's personalities. (VERY subject to review, as not many people have posted yet)
-Ability to play off each other's talents in a fight.
Acid Drop
I've liked Dark wolf, but we never get to RP together as players. I usually end up GMing for them or we sparsely interact. I also like the idea of pairing Oros with someone who is immune to being seduced, as Acid Drop can't be made to feel the lust anyone else would. In addition to that, she could hit on others without upsetting her team mate, who likely wouldn't be romantically interested anyway. Also the emotion feedback loop potential is totally bonkers, as Oros can get quite hyper.
Nyxia Torrentia, Neon Tempest of the Ultraviolet Rainbow
Ponn is someone else I don't get to play with a ton player to player. Her snarky personality is a perfect balance to Oros's overly friendly nature, and I could see her trying to crush Oros's spirit at every opportunity, or play hard to get. Also would have stupid high DPS as they both fill the "I make stuff die" role at different ranges.
Kriegspiel
My GM from another RP. I think the player fascinates me more than the character combo. It's not horrible, it's just not as spectacular as some of the other ones. But I could see Oros's need for acceptance making her easy for Kriegspiel to manipulate, even if she'd have to stay on her toes to keep Oros in check. There's also some interesting synergy with the pawns where they could explode, causing Oros to bleed and become stronger.
Evil Eye
Emeth seem like a fun sort. Never played with them though, so a little skeptical. We do have good fun in the discord in the other RP. Evil Eye has no real way of harming people on her own but seems pretty OP against other magical girls. This would be the purified magical girl busting team if it ever happened. Otherwise, Oros's small area of influence means she doesn't get much benefit from Evil Eye's sight.
Shatterscape
I played with Villamvihar in the past, but only briefly. I don't know what to make of their personality, so can't comment on that either. I do like the idea of Oros charging towards her next waifu (the enemy) with fake waifus flanking her on either side. But I don't think they have a way of really benefiting each other, as Shatterscape gains nothing out of Oros's presence, and may be a liability to her clones if they get too close.
Earthshaker
I didn't get much interaction with Lone wolf in the last RP we did together, but I got the feeling that our needs are a little different. There might be some personality chemistry there with Oros being cute and Earthshaker being stone faced, but it's not as interesting as most of the others. And in fights? They're two melee characters that have no way of benefiting each other.
Mercurial
I don't think this team-up is bottom tier garbage, but the three paragraph character sheet doesn't tell me much about who they are or how they'd interact with Oros. I'd need to see a bit more of them before I could get excited about pairing up.