[2] He has had roles in two plays by Roy Williams, Emile in 2003's Fallout and Kev in the 2005 production of Little Sweet Thing.
[4] In 2006, he played Andre in Tanika Gupta's Sugar Mummies[5] and a mentally-ill patient in Joe Penhall's Blue/Orange,[1] and he played Jimmy in A Taste of Honey at the Royal Exchange, Manchester in 2008.
[7][8] McCalla's television roles include parts in Grange Hill, The Bill, Footballers' Wives, and Trexx and Flipside,[9] and he appeared in a BBC Film Network short film called Attack in 2005.
In 2015, he was the voice of Roley the road roller in the UK dub of the Bob the Builder reboot.
From 2017 to onwards, Marcel voices Two, Four, Eight, Thirteen, Twenty, Twenty-Three, Twenty-Six, Twenty-Nine, Forty, Fifty-Five, Eighty and Two Hundred in Numberblocks.