He is portrayed by Reed Alexander
He first appears in iNevel, the sixth episode of the show. Nevel invites Carly Shay over, and kisses her. She becomes angry about this, and tells on Nevel's mother, which made Nevel's mother punish Nevel for trying to go try to make Carly his girlfriend, telling "YOU WILL RUE THE DAY!"
He reappears in iRue the Day where he computer hacks iCarly.com at the perfect time, when his mother goes off on a boat cruise for 2 months and is only guarded with a hopelessly confused grandmother. The iCarly trio are unable to hack his own website, but they call in the military to stop his computer hacking and left Nevel dangling on a strong rope to the ceiling at his own house.
Later, in iWant My Website Back he tricked an extremely hyperactive girl named Mandy to sign the URL document to him for the iCarly website. Carly tricked him into thinking she'll kiss him, but she was actually on a pulling rope attached to a pole held by Sam, Spencer, Freddie, and Mandy into her apartment room so Carly can get the URL document back and not having to kiss Nevel.
In iFight Shelby Marx, he tricks a professional female teenage fighter named Shelby Marx into thinking Carly injured her grandmother on purpose, but Carly and Sam reveal the truth to Shelby, so all three girls Carly, Shelby, and Sam pulverize Nevel.
In iGive Away A Car, he forces the iCarly trio to get him a brand new car that can drive at least 25 mph or else the iCarly website will be shut down for fraud.
In iChristmas, he appears in a virtual reality where he is Carly's boyfriend in which Carly's brother Spencer was born normal.
Nevel was absent throughout Season 3, although he was mentioned from time to time. Reed Alexander also appeared in a few videos on iCarly.com during the production of Season 3. In the Season 4 episode iPity the Nevel, (which is rummored to be his last appearence on iCarly), a video of him yelling at a little girl and breaking her lollipop in revenge for breaking his pickle jar is put on the Internet, shattering his reputation with his website now revoked. Now that Nevel has hit rock bottem he goes to the iCarly crew asking for a chance for redemption; though they are reclutant, then try to help him get back on his feet (they were convinced when Nevel drank from Sam's sweaty shoe filled with Wahoo Punch), after first hog-tying him up as a rodeo cowboy does to a bull. But after Nevel finally saves his reputation he completly blows it when a paraplegic man bumps into him, and Nevel has yet another outburst which is also filmed. His fate remains unknown, but it's possible this could be his final appearence.
He was mentioned in iGet Pranky, where Carly wrote that Nevel left a dessert for the iCarly people (it was supposed to be a prank).
Nevel made another appearence in iHalfoween, where he tried to get back at the iCarly's for not helping him after the second incident with the man in the wheelchair. He came to the party dressed up as a Purple Robot, giving the iCarly's candy that made their voices really deep, and then locked Freddie in the Purple Robot suit to trick everyone at the party into thinking the Purple Robot was him (which caused Freddie to land in the Jerk Basket 20 times until the iCarly's finally realized their error). Carly pretended to apologize, but then had Nevel put in the Jerk Basket and subjected to the same punishment Freddie had unwittingly experienced.
He has a obvious affinity for cooking, something that his actor, Reed Alexander, also does.