Jaiko Gouda, known in Japanese as 剛田ジャイ子, is a recurring character in Doraemon and the younger sister of Takeshi Gouda (Gian). She is often portrayed as cheerful, outspoken, and creative, with an interest in drawing and manga. Jaiko appears mainly as part of Nobita’s social circle and family-related storylines, where her interactions add humor and tension. She is also notable as the future wife of Suneo in some timelines, making her an important supporting character in the series.