Dib Membrane

Dib is a young, eccentric boy who possesses a fascination with unexplained paranormal phenomena, such as ghost hunting, Ufology, and cryptozoology, as well as with the supernatural and occult.

He intercepted the words spoken at the Great Assigning on planet Conventia in the first episode with his laptop. Six months later, he noticed a strange, green foreign exchange student enter his classroom. Dib tried his best to convince the world that it is in danger, but nobody believed him, due to previous erroneous claims of supernatural beings. Since then, he has made it his mission to protect his oblivious home from Zim's schemes against all odds.

Apperance
Dib is twelve Earth years old and resembles his father, Professor Membrane. Both have black, scythe-like hair; in Dib's Wonderful Life of Doom Dib's got more jagged and bigger with age. Many people claim that Dib's head is big, a running gag in the show; but it's not visibly bigger. The redesign process God Save the Dib, however, actually gave him a bigger head.