MarkOfMastery, formerly known as big_mak, is a Super Smash Bros. Ultimate Sheik player with an Inkling secondary from Chicago Illinois. He is currently ranked 18th on the Chicago Ultimate Power Rankings and has wins over players such as Skilly, Panda Bair, PowPow, Earl, and SNooFL.
In Super Smash Bros. for Wii U, MarkOfMastery was also a Sheik main, considered one of the best Sheik mains in the Midwest. He was ranked 4th on the final Chicago Power Rankings. He has taken sets off of players such as Ned, Ryuga, yeti, Panda Bair, and NiTe.