Step 1 : Go to battle.net
Step 2 : Sign in
Step 3 : Go to Account
Step 4 : Select StarCraft 2
Step 5 : Change Name for your region
Step 6 : Change your username to : llll, lll, llllll, lllllllll ,llllllllllll, lllllllllllll , or one of the other barcode variations
Step 7 : Turn on KPOP preferably some old 2pM
Step 8 : ????
Step 9 : Profit
Those are the steps to get to GM on SC2.
Don't tell anyone you saw it here.
Also keep in mind some of the other variations that may be common like wwwwwwwwwwww , kkkkkkkkkkkkkkk , aaaaaaaaaaaaaaaa, yyyyyyyyyyyyyyyy, ect. will not work in getting you to GM, top Diamond or mid Master at best.
gl hf and happy gaming