Ken Satori operates as an A-Rank Sniper within the Arashiyama Squad, distinguished by his unique capacity to dual-wield Egrets—a skill that solidifies his moniker as the "Peerless Double-shot Sniper." He frequently showcases this technique with pride during missions, emphasizing his combat expertise.

His appearance features messy, chin-length light brown hair parted centrally and sharp green eyes. Clad in the standard Border uniform, he dons a red athletic jacket emblazoned with his squad’s emblem during combat, utilizing a Bagworm to mask his presence as a sniper.

Carefree and attention-seeking by nature, Ken maintains his flamboyant demeanor even in battle. During the Black Trigger Retrieval Arc, his failed snipe attempt on Izumi prompts irritated complaints about tactical missteps. Later, he disrupts Izumi and Miwa’s clash with Arashiyama by disabling their right hands in a single move, immediately seeking praise for his decisive intervention.

As a mentor in the Border Enlistment Arc, he collaborates with Haruaki Azuma and Tetsuji Arafune to train C-Rank agents. A training session goes awry when Chika Amatori accidentally demolishes a wall, leaving Ken momentarily stunned before he assumes responsibility despite Azuma’s deflection of blame.

In the Large-Scale Invasion Arc, he engages Trion soldiers, neutralizing a threat targeting Kirie Konami with precise fire. After countering an airborne enemy, he dispatches it with two rapid shots, contributing to his squad’s subsequent Outstanding Service Reward.

During the B-Rank Wars Arc, he moderates a match, dissecting strategies with analytical precision. His enthusiasm surfaces openly when Chika obliterates a structure housing opponents.

Beyond combat, Ken relishes hamburgers and lively interactions with friends, particularly enjoying social exchanges with girls.