Yoshio Minamoto is Shizuka's father and a recurring supporting character in the Doraemon franchise, married to Michiko Minamoto. His background and most significant development occur in the short film *Doraemon: Nobita's the Night Before a Wedding*. On the eve of Shizuka's wedding to Nobita, he shares a heartfelt conversation with her about her decision. He recalls her childhood memories, reflecting on her growth from infancy to adulthood, and explicitly supports her choice, acknowledging Nobita's kind-hearted nature. This scene highlights his supportive and emotionally present parenting. His visual design varies across adaptations. The 1973 anime depicts him as tall with a traditional appearance. The 1979 anime and some manga chapters portray him as thin and skinny. Later iterations, including the 2005 anime and CGI films, show him with a chubbier, fluffier look, reflecting changing artistic styles. His surname, Minamoto, references a prominent historical Japanese clan meaning "source" or "origin." His given name, Yoshio, combines characters for "righteous" and "hero" or "manly," aligning with his portrayal as a principled family figure. He is one of the few named parents among the main cast, alongside Nobita's parents, Tamako and Nobisuke Nobi, indicating his recurring presence in family narratives. His relationship with Shizuka is close, with Shizuka sometimes favoring him over her mother. In broader franchise contexts, he occasionally appears in background or domestic roles. His approval of Nobita during the wedding eve remains his defining character moment, emphasizing parental acceptance and emotional warmth.