Sunny is a circus acrobat and a rising star in the scene. Originally hailing from China, he moved to the West in order to study the circus arts in Monte Carlo, the famous epicenter of circus. Later, he met Wucro, a fellow performer (his senior by multiple years), fellow monkey, and fellow lover of contortionism especially. They quickly grew very close and Sunny was ecstatic to accept Wucro as his new mentor and rival.

Even though he now lives in the West, Sunny often visits his family in China - Especially his uncle Shen Erlang, who is a master of Chinese Medicine and many other mystical arts, and who always gives Sunny valuable advice for his training.