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I play Skullgirls, Street Fighter (mostly V, although I have all the mainline games sans IV), and Rivals.

...I haven't been able to play ANY of those since my hard drive got busted, but hopefully I'll get around to resolving that soon.

As for mains, I main Squigly for Skullgirls and Ryu for SF. I mainly use Workshop characters for Rivals.

I have played a couple, but I only really stick to platform fighters.

In Nickelodeon All-Star Brawl, I main Garfield. But I also enjoy Reptar and Helga.

In Rivals of Aether, I'm mainly a mods player. I primarily main Kris (Deltarune) and Chara (Undertale), but I play a ton of others. If mods are unavailable, I can also play Kragg and Pomme pretty well, and I enjoy Elliana even though I'm awful with her.

In Brawlhalla, I main Yumiko, Cassidy, and Scarlet. But I also play Sidra, Rayman, Barbara, and Plague Knight sometimes.

I also strongly enjoy Super Clash Bros., even though it's still currently in a very buggy demo state. I play everyone in that game.

Rivals of Aether, I main Kragg; My Hero One’s Justice 2, I main Jiro; and NASB, I main Reptar. Those along with my Ultimate main being Bowser tell me I really like powerful characters with a few 2-4 hit combos and lots of bait-and-punishing.

Played a touch of SamSho when it came out as I did with KI. Played SF on and off over the years (Was very heavy into CvSNK2 when that was around). Bloody Roar. Soul Cal 2 + 3 were time sinks for me. Sunk loads of time into Injustice 2. Went about a year of heavy Tekken 7 and before that LOTS of Tekken Tag 2 (And unknown hours into the series as a whole over the years on a far more casual level). Plus countless hours of the magnitude of fighting games that came out in my lifetime that I played with my dad and brother growing up.