Cosmo Kramer did a fair bit of dating during Seinfeld, but he never appeared to have any long-term, serious relationships. According to Mental Floss, one fan theory suggests that Kramer may have had a ...

In “The Letter,” episode 21 of the third season of the sitcom Seinfeld, Cosmo Kramer (played by Michael Richards) agrees to have his portrait painted by Jerry Seinfeld’s girlfriend-of-the-week Nina ...

Seinfeld characters are self-absorbed and selfish, but Kramer is the most likable character with genuine curiosity and energetic schemes, from creating a brassiere for men called the "Mansierre" to ...