Marilyn Monroe was a famous actress and sex symbol in the middle of the 20th century, and an icon of glamour and beauty for centuries after.
Appearances in Red Dwarf
In the "Better Then Life" Total Immersion Video Game, the Cat fantasized Monroe as one of his many girlfriends. However, he often spurned Monroe's advances in favour of another girlfriend, Miranda, making Monroe jealous. (RD: Better Than Life)
Olaf Petersen was apparently also a fan, as he purchased a build-it-yourself kit droid in her likeness while on planet leave on Callisto. Lister would later put the robot together as a present for Kryten's last night, since he would be soon replaced by Hudzen-10. Though the Monroe droid looked nothing like Marilyn, Kryten believed it to be a dead ringer for the real thing. It was defective, smashing through the wall and going walk-about. (RD: The Last Day)
In Infinity Welcomes Careful Drivers, Albert Einstein had an affair with Marilyn Monroe while he was developing his theory on stasis booths. He abandoned the theory because he spent the rest of his life taking frequent cold showers.
Behind the scenes
The robotic version was played by Julie Higginson.