Ky Schweitzer holds the rank of lieutenant general in the Black Gema Gema Corps, dedicated to supporting their leader, Pyocola Analogue III (Piyoko). He debuted in the *Di Gi Charat* Christmas Special as a core member of Piyoko's team, alongside Rik and Coo. He possesses purplish-blue hair and purplish-red eyes, with standard dog-like ears, tail, and collar fitting the series' aesthetic. Distinctive features include a toothbrush and cup attached to his uniform, morning glories woven into his hair, and glasses. Personality-wise, Ky acts as the most serious member of the Black Gema Gema Corps, though he displays heightened anxiety when situations stray from plans. He also exhibits a generally caring and gentle demeanor, often fulfilling a nurturing or "motherly" role within the group. Within the Flower Viewing Special, Ky participates in the Corps' schemes, occupying the closet in protagonist Dejiko's room under Piyoko's orders, leading to a confrontation. He later joins the group for a cherry blossom viewing picnic, where tensions arise over prime seating. During this outing, he partakes in a peaceful picnic with other supporting characters while Piyoko, Dejiko, and their immediate rivals sleep. Ky appears in subsequent seasonal specials, maintaining his role as Piyoko's loyal subordinate. Examples include participating in a stage play during the Tsuyu (Rainy Season) Special and joining a band performance during the Natsuyasumi (Summer Vacation) Special, typically engaging in non-antagonistic group activities alongside former rivals. In the spin-off OVA *Leave it to Piyoko!*, Ky appears with the Corps during their mission to Earth. However, rights restrictions involving original TBS-created characters limit his visual depiction in Episode 3 to an indistinct blob, despite retaining his original voice actor and dialogue. His documented appearances maintain his established role and group interactions.