Tempera Sumi is a main character in the anime and light novel series Moetan. She is a quirky and energetic magical girl, serving as the rival to the protagonist, Ink Nijihara. Tempera is known for her playful personality and often brings comic relief to the story. Despite her competitiveness, she is also shown to be quite caring towards her friends. Tempera's magical abilities and unique style make her a memorable and fun addition to the Moetan cast.