There’s only one Mona Lisa (in the Louvre)
NFTs act like owning one in a series of rare sports cards, 

The best NFT collections allow buyers to own art and use it to choose social reputation, inside online communities of people who often don’t speak the same language, yet know their status by art rank or floor price.

Are you an alpha guy, or an average bro?
With a limited number of NFTs, only so many buyers will call themselves 'the Daddy'.
Status & grunge are core themes, which will integrate with a unique set of male/female faces. Some NFTs in this collection will mix graphic design with real street wall photography (hinted at below).

Using grunge produces a dirty look with small mistakes/irregularities, making these faces stand out from the crowd.
After all, how else would you recognize a Natural Born Rebel?