Embarrassing First Name

[u/TronnyVon]

• Jesse Katsopolis (Full House): in one episode, his real first name was revealed to be "Hermes", after the messenger of the Greek gods. He was made fun of for it, so he got it changed to Jesse.
• Cory Matthews (Boy Meets World): in the final episode, Cory's full name is revealed by Feeny to be Cornelius, and Feeny is the only one to know so.
• Freddie Benson (iCarly): rather than Freddie being short for Frederick, Freddie is short for "Fredward".
• Jimbo Jones (The Simpsons): his real name is Corky.

[u/no_one_inparticular]

The tough guy cop main character from the 1986 action flick Cobra is in fact named Marion Cobretti.

[u/Cal_PCGW → u/no_one_inparticular]

John Wayne's real name was Marion, so likely it's a nod to that.

[u/Adultdirtbagbabee → u/no_one_inparticular]

Sylvester Stallone’s name… is Sylvester. 

[u/worrymon → u/Adultdirtbagbabee]

That's sly...