Morty Szyslak is the father of Szyslak children.
In "Moe Goes from Rags to Riches", Moe's father was shown to be a Yeti. But that's not true, that episode doesn't seem to be canonical because it is built on autobiography of a talking dining rag roaring strange things.
In the episode "King Leer" more about Morty's past is shown; it is revealed that he ran a chain of mattress stores called Mattress King, and that he disowned Moe after he failed to uphold the tradition of releasing bed bugs in his competitors' stores.
- Episode – "Flaming Moe's" (Possibly Mentioned)
- Episode – "Moe Goes from Rags to Riches"
- Episode – "Lisa Goes Gaga" (mentioned)
- Episode – "Walking Big & Tall" (flashback)
- Episode – "King Leer"
- Episode – "Krusty the Clown (episode)"