Born in Belgium, Mbayo is of Congolese descent.[3] Mbayo is the son of retired footballer Marcel Kimemba Mbayo, who also played for Lokeren.[4]
Club career
On 3 August 2021, he signed a five-year contract with Kortrijk.[5]
On 5 January 2024, Mbayo joined Dordrecht in the Netherlands on loan.[6] On 7 August 2024, Mbayo returned to the Netherlands and joined PEC Zwolle on loan with an option to buy.[7]