Marcell Muller is a big and powerful winger who has been contracted by the Toyota Cheetahs less than a year after matriculated. Muller stands at 1.87m tall and tips the scales at 102kg. For his size, he is incredibly mobile and knows how to find the try-line. During 2019 he scored numerous hat-tricks for the Grey 1st XV, however, he was controversially not selected for the Free State U18 Craven Week team. In South Africa, only the Springboks Sevens team showed any interest in him. He attracted the interest of several overseas teams, including the Australian Super Rugby franchises the Melbourne Rebels and the Brumbies. He was ultimately contracted by the French Top14 club, Montpelier.