Summer is the only daughter, second eldest of the Hugglemonster family, and Henry's older sister. She sings and dances almost everywhere she goes. She often gets upset and overreacts when things are hopeless. She also hates disappointing her fans.
Summer wears red shoes throughout the entire series as well as a yellow bow, although she takes off the shoes where she's swimming. She often wears an aqua tutu for ballet, sometimes with a silver tiara.