I gueinally thought Numbah 1's name was Charlie. Until I watched the episode where he finds his cousin on the island, because it mentions his name on that.
When you get grabbed by Lizzie, she hugs you, and I believe if this had dialogue this is what they would say: Lizzie:come here Nigey! Nigel:Lizzie, let me go!
I remember in the year I was first exposed to KND in the old Cartoon Network site, it had its own official site. I recall there being this one part where you do a handscan. Anyways, I remember in that site, you had to find some 5-digit password to access something which to this day I don't know what and never succeeded in doing before the site was gone for good. Completing each of the 'episodes' in that game would earn you one letter of the password.
When you got all of them, you could input a password that would let you do the final level, which was a game where you used the MOSQUITOH to fight the Delightful Child's giant robot from that episode where they turned Nigel into an adult.