None of them. If the series had gone on he might have, but since it didn't we'll never know.
No he isn't. Dib was created by Membrane, his dad, but it was never revealed because of the shows cancellations.UPDATE: Dib was created in Professor Membrane's lab. So Dib isn't human, he just looks like a human. This would have been revealed in the episode "The Trial" if the show wasn't cancelled.~RiddleGirl
The line were Dib says "your leaders are just taller than everyone else" is in an episode called Tak the Hideous new girl.
Dib's Wonderful Life of Doom - Season 1, Episode 34
A room with a moose
bad, bad rubber piggy
"Bad, Bad Rubber Piggy"
No one knows Dib's last name. Dib's pathetic human father's first name is Membrane.
Dib , from Invader Zim , is not a vampire .
Gaz is the name of dib's sister
Daniela Dib is 5' 7".
Dib's last name is unclear. No one knows. Dib's father's name is Membrane.
Dib is played by Andy Berman