Pinky Tuscadero
Pinky Tuscadero was supposed to be Fonzie’s love interest but, things were not so lovey-dovey behind the scene. Actually, they were pretty hate-filled if anything. The actress Roz Kelly had trouble getting along with most people in the extensive cast, including her onscreen boyfriend, played by Henry Winkler. It's no surprise that her character was eventually written out of the show, but not everyone had such success...
Big Brother
Remember this guy? Probably not, he was written out of the series pretty early on. Characters Richie and Joanie weren't always alone, they actually had an older brother for the first two seasons of the show. Noticeably, his appearances on the show dwindled until they were entirely nonexistent. This was spurred by two big factors which led to the actor's job loss...