Sian Twee "Tikus" Yeo

Sian Twee's father was Keng Chuan Yeo and his mother was Watt Neo "Dopey" Chia.  His maternal grandparents were Leong Chuan Chia and Chit Neo Song. He has a sister named Chia Watt Neo. He had four half-brothers and a half-sister, named Boo Liat, Hock Ann, Hock Beng, Hock Thye and Pang Neo.

‌Sian Twee and Siew Choo are married.  They had a son and two daughters, named Chiang Lock, Suat Chwee and Suat Leng.

‌Sian Twee and Voon Sian are married.  They have a daughter named Kathleen.