Fine i'll humor this
Smash Bros doesn't count obviously
Lightning (Debut: Final Fantasy XIII)
Spyro the Dragon (Debut: Spyro the Dragon)
Neku Sakuraba (Debut: The World Ends with You)
Yu Narukami (Debut: Persona 4)
Victor Sullivan (Debut: Uncharted: Drake's Fortune)
Aya Brea (Debut: Parasite Eve)
Tidus (Debut: Final Fantasy X)
Dragonborn (Debut: The Elder Scrolls V: Skyrim)
Primrose (Debut: Octopath Traveler)
Noctis Lucis Caelum (Debut: Final Fantasy XV)
Velvet Crowe (Debut: Tales of Berseria)
James Sunderland (Debut: Silent Hill 2)
John Marston (Debut: Red Dead Redemption)
Ryo Hazuki (Debut: Shenmue)
Neptune (Debut: Hyperdimension Neptunia)
Big Boss (Debut: Metal Gear)
Yuna (Debut: Final Fantasy X)
Kazuma Kiryu (Debut: Yakuza)
Cayde-6 (Debut: Destiny)
Ness (Debut: Earthbound)
Chris Redfield (Debut: Resident Evil)
Ike (Debut: Fire Emblem: Path of Radiance)
Joel (Debut: The Last of Us)
Estelle Bright (Debut: The Legend of Heroes: Trails in the Sky)
Ramza Beoulve (Debut: Final Fantasy Tactics)
The Boss (Debut: Metal Gear Solid 3: Snake Eater)
Aloy (Debut: Horizon Zero Dawn)
Jill Valentine (Debut: Resident Evil)
Fox McCloud (Debut: Star Fox)
Waluigi (Debut: Mario Tennis) - He appeared in so many games and it's amazing I never played any of them. I am not much of a Mario Party/Kart/Golf/Whatever type of guy, only Mario RPGs and Main Series
Geralt (Debut: The Witcher)
Ryu Hayabusa (Debut: Ninja Gaiden)
Bayonetta (Debut: Bayonetta)
Auron (Debut: Final Fantasy X)
Shulk (Debut: Xenoblade Chronicles)
Ren Amamiya (Debut: Persona 5)
Claire Redfield (Debut: Resident Evil 2)
Goro Majima (Debut: Yakuza)
Nathan Drake (Debut: Uncharted: Drake's Fortune)
Revolver Ocelot (Debut: Metal Gear Solid)
Isabelle (Debut: Animal Crossing: New Leaf)
Captain Falcon (Debut: F-Zero)
Amaterasu (Debut: Okami)
Lloyd Irving (Debut: Tales of Symphonia)
Ellie (Debut: The Last of Us)
KOS-MOS (Debut: Xenosaga)
Quiet (Debut: Metal Gear Solid V)
Maybe they count maybe they don't -
Sora (Debut: Kingdom Hearts)
Riku (Debut: Kingdom Hearts)
Aqua (Debut: Kingdom Hearts: Birth by Sleep)
I only played Chain of Memeories, this is the only KH game I have ever played. I guess it count for Sora but I don't remember if Riku and Aqua were there
Ryu (Debut: Street Fighter)
Chun-Li (Debut: Street Fighter II)
Guile (Debut: Street Fighter II)
I only played Street Fighter 20 years ago on arcade and who remembers how many times I played, not a lot. Were never fan of fighting games on arcade, preferd beat-em ups
Also I did play Megaman vs Street Fighter but this is super cheating
Kratos (Debut: God of War) - I only played the first of the first game, right after you beat the Hydra boss thing. I was amazing but after that it became boring so I quit
D.Va (Debut: Overwatch) - played tutorial and checked all the characters when it was on free weekend, 2 hours tops
Captain Toad (Debut: Super Mario Galaxy) - come on, even though SMG was his debut it doesn't count outside of his own game (and I did play SMG1 and 2)
Master Chief (Debut: Halo) - Played Halo 3 multiplayer with friends, maybe it counts..but the character itself is single player
Albert Wesker (Debut: Resident Evil) - Does playing with him in RE4 mercenaries count?
Richter Belmont (Debut: Castlevania: Rondo of Blood) - seems like he appeared in SOTN and PoR (which I played) but I don't remember him