Outside the ring he is something of a gentle giant, admitting he prefers putting paint rather than opponents on the canvas, though he hopes his proficiency with the palette will help him realise his dream of opening his own studio and holding an exhibition of his work.
Joyce, the super-heavyweight successor to Olympic champion Anthony Joshua on the GB squad, is in pole position to become the first Briton to qualify for the 2016 Games, having won all five of his bouts while representing the British Lionhearts in the World Series of Boxing (WSB) tournament which serves as a stepping stone to Rio.
The 29-year-old Londoner, who has a 2:1 university degree in fine arts, is obviously pretty good in the ring, having recently gone into the Havana backyard of the Cuban champion Lenier Pero and defeated him.
That’s some feat, as no other WSB boxer has won in Cuba. A further