mattyb Mattyb is a great singer\ rapper but lets see how much u know about him BEST OF LUCK! justinbieberlover published on February 23, 2014 Stacked 1/5 what is mattyb's real name mathew barret mathew morris cian kortny 2/5 how old is matty 12 9 10 3/5 how many brothers dose he have 5 3 6 4/5 how many sisters does he have 1 2 3 5/5 do u like mattyb yes no never heard about him