Christopher Castile wasn't that different from brainiac Mark Foster, his Step by Step character. Castile retired from Hollywood and now teaches U.S. History and Political Science.
Brandon Call's role as J.T. Lambert on Step by Step turned out to be his last in Hollywood.
Josh Byrne lasted one season as Patrick Duffy's son on Step by Step before his character was mysteriously written out of the script. And then he became... a pirate? It's unclear, but this is one of the few photos of him we could track down.
Cody, played by Sasha Mitchell, was the lovable and goofy cousin who lived in the Foster-Lamberts' back yard. Surprisingly, Mitchell changed his appearance in order to keep working after he was arrested on domestic violence charges.
Emily Mae Young
Emily Mae Young played Lilly, the infant daughter of Frank and Carol who seemingly replaced Frank's son Brendan in the cast. She's no longer a working actress.
Jason Marsden was famous for TWO 90s sitcom roles, J.T.'s friend Rich on Step by Step and a part on Boy Meets World. Might he show up on Girl Meets World next? We can only hope.