Dr. Hax is the ugly and morbid version of Wallace Breen from Half-Life 2 and its subsequent episodes. He is an expert at hacking and glitching G-Mod. He uses this ability, however against hackers.
He points with his forefinger in the direction of the cheater, hacker or other enemy. Then he spawn with his GMod skills an old computer monitor and kills his victim with that. He can also teleport himself to reach the little and dirty rooms of the fat and addicted hacker and cheater.