In 2006 in an online chat with Hey Arnold! fans, Bartlett revealed that Arnold's grandpa used his last name throughout the series, almost confirming that Arnold's last name is "Shortman".
Gerald.
I believe it's Helga G pataki
Abner
There are 5 seasons of Hey Arnold.
Try looking on google :). type the name and what episode it is.
Gerald.
angry
The character was never given a last name
It isn't revealed.
Nadine Lowenthal (voiced by Lauren Robinson) .
I believe it's Helga G pataki
Abner
Hey Arnold! was created by Craig Bartlett .
There are 5 seasons of Hey Arnold.
wild thonberris,catdog,hey arnold,
the last episode is called the journal. it is when he finds a journal of the stuff his parents did.. you can watch it on netflix.
"Watch hey Arnold" is not a question therefore cannot be answered at this time.