Both ExpungeRedact and SopranoMelody are robots. They are besr friends and citizens of Blu City.

Expunge has the letters E and R on each of his eyes. Parts of his endoskeleton appear because he was broken many times but no one could fix him.

Expunge can only communicate using screeching noises. His only facial expression is an eerie smile that shows his childish and happy personality.

Melody has the letters S and M on each of her eyes. She is a great singer and is the one who found Expunge in a junkyard. Soon, those 2 became best friends.

Melody is caring and kind and loves to be around Expunge because she somehow understands him. They both live together in Blu's castle.

ExpungeRedact and SopranoMelody:

They were based off withered Fnaf animatronics.