Best character creator?

Spore

I gotta say, I like Star Citizen's approach a lot. It doesn't have that many options yet but the combinations you can do with them are already cover a wide variety. And the "genetic" approach is really cool, especially since you are supposed to play an offspring/relative who inherits you character's stuff after your final and ultimate death. We'll see how that all plays out in the end (if there is an end ) but the idea alone is kinda new and cool.

In case people don't know what I mean by "genetic" approach, the way this works is that you have a couple of repset faces and you merge them together with different weights to get a new unique face. So it's like incorporating genetic traits from you parents/grandparents basically.
(The screenshot may be a bit out of date, they update their stuff quite frequently and I don't know how old this one is, just googled it.)

Surprisingly, Crusader Kings 3 has a robust character creator with savable DNA that you can reuse and share, and which affects your offspring. It's a little weird, given that you play that character for essentially a blip in the timeline of the game, but it's fun to sink an hour into tweaking eyebrow height and chin depth. I have a CC addiction, I admit it. I still play around in the DA:O one from time to time and wish all games would make stand-alone CC to waste time with.

You guys definitely think that I'm trolling, but Honey Select 2 has very extensive and powerful character creation tools.

There's so much that you can do with them especially with user-made cosmetic and clothing mods. Sky really is the limit.