Nevel Amadeus Papperman is a web critic and is one of the main antagonists in the iCarly series. He first appeared in iNevel. He is portrayed by Reed Alexander. He is shown to be extremely intelligent and cultured (though extremely old-fashioned), but egotistical and arrogant boy who dislikes just about everyone except himself. He has a crush on Carly Shay, and has tried more than once (unsuccessfully) to get Carly to kiss him. In the alternate reality in iChristmas, he was Carly's boyfriend. He's also infamous for his voice.

Nevel is most notable for his successful review website, Nevelocity.com, which has millions of hits from Internet users across the globe. Students at Carly's school claim that a web series is not cool if it doesn't receive a good review from his site (their reason for not watching iCarly).

His lifelong dream is to own a haberdashery, which, according to him, is a men's retail store that sells men's accessories such as wallets, belts, buttons, and zippers, and gets annoyed when people always ask him what it is. Nevel possesses a tendancy to boast and glorify himself and his achievements, and has a well-developed ego. When Carly first visited him, complementing his home and website, Nevel responded "I know." He also showed her a CAT-scan of his brain (which he had framed), remarking "Big, isn't it?". He continued by smelling Carly's hair, identifying the type of shampoo she uses by glance. Throughly creeped out, Carly nervously replied that he was very good at identifying smells, with Nevel's response being "Yes." Other examples of his snobbish behavior include his mysophobia (hatred of filth and germs) and his overuse of dated words such as "banter" (conversation), "rue" (extreme regret), and "shan't" (contraction for shall not).