RealDogePunks are a collection of 10,000 unique NFTs on Dogechain, each with their own distinct characteristics and emotions in the form of pixel art dogs. This variety allows a personal connection with the characters, as each individual can find a RealDogePunk that closely resembles him. The community quickly embraced this concept and began searching for prominent doppelgangers, leading to a fun and exciting contest being created to showcase the best submissions.