Check if a Gray Boys has been mutated here: https://lab.grayboysnft.com/showcase

MUTANT COLLECTION: https://opensea.io/collection/gray-boys-mutants

Gray Boys are a collection of 10,000 generative NFTs that act as membership to The Mothership.

The Gray Boys' Mothership is the first of its kind experiment to proxy NFT ownership verification, perks and utility of other blue chip projects to all Gray Boy holders. Gray Boy holders vote for what NFTs The Mothership's wallet acquires, and proxied ownership of those acquired NFTs is shared amongst all members. 

Visit https://grayboysnft.com/ for more details.

Verified Smart Contract: https://etherscan.io/address/0x8d4100897447d173289560BC85c5C432Be4f44E4#code