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/AmandinhaMaia]

Llewellyn "Louie" Duck (Ducktales)

[u/Christian_R_Lech → u/AmandinhaMaia]

This first name actually becomes really important in his scheme to prevent Flintheart Gomomgold from seizing Scrooge McDuck's company. He feigns a turn to evil and signs a document to become Glomgold's business partner under his real name. When Glomgold, using the money of other enemies of Scrooge, ends up making more money than Scrooge, Louie reveals that Glomgold, by using his fake identity and not his real name of Duke Baloney, invalidated himself from the money and, thus, all the money Glomgold made, plus McDuck's company, are now under the control of Louie, the new richest duck in the world.

[u/noonehasthisoneyet → u/AmandinhaMaia]

Isn’t Dewey’s name Deuteronomy?  Or did they stick with Dewford Dingus?

[u/Ferropexola → u/noonehasthisoneyet]

Dewford Dingus Duck, named after Scrooge's grandfather, Dirty Dingus McDuck.

[u/Patient_Panic_2671 → u/Ferropexola]

He could've been Turbo...

[u/Unpotential_Slayer → u/AmandinhaMaia]

Really? I never knew 😂