St. Juste was born in Groningen to a Dutch mother and a Kittitian father.[3] He grew up with three siblings.[4] Benjamin is a former SC Heerenveen and FC Groningen youth player, plays currently futsal for VV Pelikaan,[5] Yoshua, plays Futsal for the Netherlands national futsal team.[6] Sister Naomi works as a fashion model and television actress in the Netherlands.[7]