Guni

From NightWalker -Midnight Detective- anime, Guni is a small green "urban fairy" that has befriended Shido Tatsuhiko. She has a tendency to hide in his hair to keep humans from seeing her. She is usually sarcastic and loves to bicker with Yayoi or tease Riho, making her comic relief for the show. Despite the fact that she does possess some magical powers and has helped Shido in fights before, she does so only when she feels like it. Despite her attitude, she is shown to truly care about her friends.