Who is Merlin's Beard?

They visualize the map in a detailed rendering, completely in their mind. They have a biological wallhack; their godlike perception highlights all enemies within light-years. Their eyes are closed as their mouse gracefully swerves across the table, making immaculate twitches as they flick from head to head. The bullets that escape their gun barrel are surgical; each making a deadly strike in between their opponent's eyes. Their spray control is otherworldly, their crosshair erratically jolting across the screen as their wrist muscles perfectly predict the next bullet's location. Time literally stops as he peeks, sunlight curving as his trigger finger impacts his left mouse button, sending enemies to a digital shadow realm before they even know what happened. They are un-killable. They are undefeatable.