You can create from 100 to 10 000 unique variations of NFTs character collection from one basic theme or character as a base.
1- Basic Character design (every character will have the same outlines, like Bored ape yacht club or similar collections). Mixed with different traits (amount depends on the size of the collection)
Traits can be:
And everything you want. I believe before start working is ideal to know you in order to discuss about the project so I can fully understand your needs and start making notes right away.