Sean Enoshima is the main character of the Pepepepengiin universe, a 2016 collaboration between Sanrio and Dream Link Entertainment. He leads the Antarctic United States government, communicating exclusively through "pe-pe-pe" sounds without verbal speech, and relies on his secretary, Nene Kurio.

Born in Hayama, Kanagawa Prefecture, Japan, Sean was raised in the Shōnan area. His father, Bonbon, is an executive at a trading company, indicating a privileged background. Sean possesses a distinctive smile that contributes to his popularity among female characters.

His personality reflects penguin-like traits, characterized by a desire for popularity and wealth, coupled with an aversion to hardship. His primary role involves engaging in governmental discussions and debates alongside other anthropomorphic penguin politicians within the Antarctic United States.