They are sitting in lobby of 901 acting like it's not them, has other hackers from leaderboards defending him
Go there and report or if you are on SHIP 2 search for Player ID "Katherine" and report from there. This person ruined a lot of people's nights.
Wheres your proof that it's him and not the other 10 kathrine ive seen on b-901
When I reported the player in-match, his player ID name + character name was Katherine. But I didn't take note of the of the player ID number and neglected to save a screen of it. It's probably two different people - considering the OP listed the ID as 11179768 which doesn't match the picture here.