Robby Smith (hidden) is a Sim in The Sims Castaway Stories. Though his character data was deleted, he can be seen in the game files using a third party program, such as SimPE. He is the son of Roberta Smith.
This version of Robby looks completely different when compared to the playable version. He has no glasses, brown hair, a different hairstyle, light blue eyes, tan skin, and a slightly different facial structure. The reason for these significant differences are unknown, though it is speculated that he was the original version, and was later on replaced with the final version which shipped with the game.