MarkOfMastery, formerly known as big_mak, is a Super Smash Bros. Ultimate Sheik player with a strong Inkling secondary from Chicago Illinois. He is currently ranked 9th on the Chicago Ultimate Power Rankings. He is considered one of the best Sheik players in the United States and also has wins over 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.