On Belgium's roster for EuroBasket 2013 after missing out as a reserve in 2011, Mwema has now won over 50 caps since his debut in 2012 following appearances at U16, U18 and U20 level. Dividing his junior development with Brasschaat, Ticino Merksem and St. John Basket, he signed his first professional deal with hometown club Antwerp in 2008. He was named as the Belgian League's Most Promising Player in 2012. He attended Lessius University in Antwerp and was involved in a talent discovery programme called ‘Belgium Got Game'. Mwema is the son of a Belgian mother and a Congolese father. His sporting heroes are Kim Clijsters and LeBron James.