Nathan is a child neighbor of Jon Arbuckle, known for making scientific projects with diabolical intentions. He is introduced as a new neighbor in his first appearance. His only known relative is his mother.
He later came up with devices to change size, control minds, create invisibility and give nightmares, all of which he used against Garfield.
He is known to be Garfield's nemesis.
He was briefly the owner of Mrs. Ferret.
Nathan is a boy with brown hair and wears glasses. In his normal clothes, he wears a dark blue shirt, a purple pants and red sneakers. In his scientist form, he wears a lab coat, headgear and blue gloves.
Nathan at first to Garfield and Odie was a nice kid but in his true form he is shown to be an evil scientist.
- The Caped Avenger Strikes Again! (cameo)
- The Control Freak
- More Than Meets the Eye
- Take a Ferret to Lunch
- Lion Queen: Open the Cages (cameo)
- Bewitched: Familiar, Familiar (cameo)
- Bewitched: Bewitched and Bewildered (cameo)
- The Mean Machine: Smartphone Too Smart (cameo)
- Glitter Gulch: Showdown at Vito's (cameo)