Replacement Doctor (Name possibly "Gill Finley") is a character from Season 4 only. For some reason, he replaces Dr. Gill Gilliam for all of the season except SquidBob TentaclePants and Once Bitten. It is unknown what his name is. His first appearance was The Lost Mattress when he had Mr. Krabs as his patient. His next appearance was in Funny Pants when Squidward's laugh box burned out. His last appearance was in All that Glitters where it is revealed that he is not really a doctor.