Anthony M. Chamberlain is an American transfer student at Okitsu High School, fluent in Japanese due to his deep otaku passion for Japanese pop culture. His exchange student status makes him an outsider in class, though his language skills prevent communication barriers.

His introduction sparks a comedic misunderstanding with classmate Akane Kobayashi. When Anthony greets her with "Hello!" in English, Kobayashi mistakenly believes she has woken up in America, highlighting her ditzy nature and his role as a cultural outsider. This incident cements his function as a catalyst for humor through linguistic or cultural differences.

Anthony's otaku interests drive his Japanese fluency and cultural familiarity, though specific hobbies remain unexplored. His character design features blonde hair, aligning with Western phenotype stereotypes occasionally referenced. Despite being a native English speaker, he rarely uses English beyond initial greetings, emphasizing his immersion in Japanese language and otaku culture.

Across all media, Anthony lacks significant development, narrative arcs, or expanded background. He remains a supporting character whose presence fuels situational comedy and cultural contrast within the class ensemble.