I would say the developer Lightweight with Bushido Blade. Everything they made after the first Bushido Blade was either mid (Bushido Blade 2 failed to live up to the promise of the original but was decent) or straight up terrible (everything after Bushido Blade 2). They are a fascinating developer because the first Bushido Blade was very ahead of it's time and represented a revolution in fighting game design that never ended up taking hold...a lost future if you will, as Mark Fisher would say. I would've loved to live in an alternate timeline where Bushido Blade was massively influential and changed the nature of fighting games as we know it, but sadly it did not come to pass. I see a game like Bushido Blade as a kind of "lost future" of fighting game design, in that if it had blown up and become super popular we might've seen fighting games do away with traditional things like health bars & supers altogether, focusing more on tense, short, visceral encounters where you can die in one-hit. Playing that game know still feels fresh & different. I wonder why developer Lightweight was never able to adapt to the PS2/Xbox generation and take advantage of the improved hardware? they remind me of the Yu Suzuki lead dev who created Shenmue. Super ambitious and way ahead for it's time but was never able to evolve in future console generations and found themselves stuck in time with archaic feeling games (Shenmue 3).

Are there any developers you would consider a "one-hit wonder"?