Being a reality, TV or film star today doesn't guarantee anyone will even remember you tomorrow. Just ask these folks! They were once top bananas either through fame and fortune or sheer infamy and now people have completely pushed them out of their minds.
The aspiring actor gained a lot of attention as OJ's house guest and was a witness during the Simpson murder trial. But despite playing a few minor roles here and there, Kato never made it big. What's even sadder is they hired another actor to play him on American Crime Story.