Saint Suppapong Udomkaewkanjana is an actor, rapper, and singer born in Trat Province, Thailand as Huang Mingming, a Chinese name given by his great-grandfather. He is ethnically Chinese since his parents' family's ancestors were from China.

He graduated from Tradtragarnkun School, Trat Province, and Assumption College, Bangkok. In 2021, he graduated from the Faculty of Economics at Srinakharinwirot University. In childhood, He started activities for the benefit of the public in grade 4. During his studies from high school to university, he participated in various volunteer camps. Until in 2017, he received the Person of the Siam Award in the outstanding youth for society category.