APB: Reloaded is by far the best one I’ve seen despite the game being pay to win. You can customize your character to no end from designing decals for clothes, tattoos, cars, even making your own theme song. Not to mention the basic stuff like face, hair, and body customization. But like I said, be wary of the game. It’s a sweat fest.

Elder Scrolls Morrowind and Oblivion, and (to some extent) Fallout 3 & New Vegas. They had a good amount of character customization compared to their later entries.

Cyberpunk 2077 had quite a bit as well, more than what I was expecting.

Stardew Valley has a lot of different shirts and accessories to choose from during character creation.

You could argue that, to some extent, Minecraft has the best character creation in the form of skins.

I know it’s not what you meant, but Paranoia (the TTRPG) has a great mechanic where each player’s choices pisses off other player, ah you picked weapons skill 2, cool, so the next player gets -2 on weapons, hope you didn’t expected a high skill there.

There used to be this game called Aion. It was an MMO from like 2007. I had, hands down, the best character on there. The character looked like a cartoonified version of a Muppet Mr Bean. Most people just made short and wide characters with tiny heads, but that’s all games. My character was like 10ft tall, super lanky with a beer belly, and made everybody else look ridiculous with how interesting he was. I honestly could have made a real life muppet version of him out of foam and sticks and felt and stuff.

Edit: apparently it’s still around. Which is wild. Maybe I’ll make a new account or see if my old character is still there. https://en.wikipedia.org/wiki/Aion_(video_game) it’s Korean and from 2008. I don’t remember it being particularly good or unique other than you could glide places with wings, but that’s been done by every game under the sun now.

It also looks like there’s a sequel that either just came out recently or is about to very soon.

I think the wii mii creation system is probably the best since there’s such an excessive amount of customization while being still very limited in scope that you can make some crazy stuff

Not the best, but GaiaOnline has a soft spot in my memory.

I really enjoyed the character creator in Sunset Overdrive, it’s too bad the actual game was garbage.