The "Heavy Weapons Guy" (also known as Heavy) is one of the 9 classes from Team Fortress 2 that first appeared in Cooking with Bowser & Mario 2, and later on in R64: Mario for Hire. In these, his unofficial name is Garry. He always appears in Gmod and there are a lot of bloopers that contain his voice clips, without him appearing himself. Mario often uses the voice clips.
His favorite food by far is a "Sandvich", as he is seen in Cooking with Bowser and Mario 2 chasing after one hanging in front of him.
He appears for the third time working at the office, the one Mario was working at. After Mario steals his sandwich, Mario blames Luigi and he attacks Luigi. Later at the end, after Luigi hits his Minigun, Luigi blames Mario for touching his gun, ”Sascha” and he attacks Mario.
After Mario gets him to crash into a spaghetti machine he angrily gets out and intends to attack Mario, but believes Mario is part of the RED team due to him wearing red. So he takes Mario to the badlands and has him help defend the intelligence. But later after he sees the damage Mario has done he drops him off back at the spot where he found him and tells him to never come back.
He was seen playing basketball at the beach. As Mario arrives to cheer him on (and attempted to shock him with a Joy Buzzer) and calls a Hi-5, Heavy agrees. As the Heavy hi-fives Mario, his hand was suddenly blown off. As Mario realized that he set the buzzer's "Powah" in 1000mA, the Heavy pulverizes him off-screen.
He appears as "Heavy Squid" and a member of Meggy's Splat Squad to compete in the turf war. However, during training, he is crushed by Mario making him unable to compete in the tournament and presumably died.