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He first appeared in "Making the Case" as Lincoln's rival in a karate tournament.
In "Overnight Success", when Lincoln has a falling out with Clyde, while Liam and Chad have run away, he decides to invite Artie over to spite him. He lies to Artie about him being his first choice for a sleepover guest, but it was pretty obvious he wasn't since he already crossed Liam and Chad off a list he had for potential guests, and they ran away from his sisters. Before they can do anything, Lucy tells them that she needs a volunteer to act as a body for a practice funeral, and asks Artie how he handles enclosed spaces. Artie may be claustrophobic because Lucy wanted his assistance for the practice, and the mere mention of enclosed spaces causes him to run away.
He appears again in "Lincoln Loud: Girl Guru" making his first voice role. Here, he was the only one at school who tried Lincoln and Clyde's salt and vinegar pies. After having the first bite, he spits it out in disgust.
In the chapter book Campaign Chaos!, it is revealed that Artie is president of the Royal Woods chapter of the official Boyz Will Be Boyz fan club, and he considers voting Chandler for school treasurer due to his promises of bringing the band to perform at the school if he wins the election. It is also revealed that he has an older brother who attends Royal Woods High School.
Artie is a svelte (slender and elegant) boy with a brunette pixie cut. In his first appearance, he wears a yellow sweatshirt with a horizontal stripe on the center, blue jeans, and white sneakers with red stripes. In later episodes, he instead wears a red sweater with a single stripe on it.