Morty Seinfeld – Seinfeld

For Seinfeld, it wasn’t just George’s father that had a different actor, but Jerry’s also. Morty Seinfeld is one of the more beloved side characters in the show. That can be attributed to Barney Martin, who played the part of the Florida retiree to great comedic effect.

The character was briefly portrayed by Phil Bruns way back in the first season. However, it was a short stint, as he was replaced because show creators Jerry Seinfeld and Larry David wanted a character that was more like a crotchety older man would behave.