CastActingPopularity 8%
Calvin Choi Yat-Chi
Also credited as Calvin Choy, Sir One One
Born Jan 3, 196561 years oldHong Kong, British Crown ColonyActing
Eldest among the 3 Grasshopper members. He has always been regarded as the most creative one and is also producer for various Hong Kong artists. Grasshopper is still active in the music industry, especially performing in concerts.
