So, I don't see the "new" in NFTs, they have been here for quite some time - creary.net is an existing platform, where you can upload / buy / sell digital art for some years now - but NFT adds standardization and wide adoption of the concept. Source: over 2 years ago

The creary network maybe? https://creary.net/. Source: about 3 years ago

The background is taken from fortnite but this is the link to the website that I made it in: https://charactercreator.org. Source: over 1 year ago

Another option is https://charactercreator.org/ which allows for a full body character and is probably the closest alternative I know of to HeroMachine. Source: almost 2 years ago

The Character Creator - Has some customisability, unfortunately the style is more for western comics than manga/anime. Source: about 2 years ago

Here, you design character and Roleplay as it, We recomend you use The Character Creator witch you can find here. Please submit your character with information about it in a post using the flair “My Character”. Good luck and Happy Roleplaying! Source: over 2 years ago

The Character Creator has a license wherein if you use it for non-commercial products (ie - a free game) you can do whatever more or less, and if you are using them for a commercial product a license to do so starts at $5. There's more details about it on their Patreon, which I haven't read, so double-check it for any gotchas I may have missed. Source: almost 3 years ago