Profile picture: an NFT collection of avatars built from combinations of traits, such as CryptoPunks or Bored Apes, which owners use as their online identity.
For everyone that hides behind a PFP to do a rug pull or a scam, there's also another person that hides behind the PFP to be a kinder person than they would be in normal social situations.
Erick Calderon, Bright Moments on Prioritizing the Personal
But with CryptoPunks, often the discourse is more about it being the first PFP and how it set up that whole movement.
John Watkinson, Matt Hall and John Watkinson on Beginning Movements