Karen Kujou is a vibrant and energetic character from the anime series "Kiniro Mosaic." She is a half-British, half-Japanese girl who lived in England before moving to Japan. Known for her lively personality and distinctive blonde hair, Karen quickly becomes friends with the main cast, bringing her unique perspective and enthusiasm to the group. Her cheerful demeanor and playful antics often serve as comic relief, while her cross-cultural background allows for interesting interactions and development with her fellow classmates, highlighting the theme of friendship across cultures.