The following is based on Fallout 2 behind-the-scenes mechanics and similar content.
Chet is a shifty looking character in a Vault 13 jumpsuit that was cut from Fallout 2 before release. His purpose was simple - he was a debugging tool and had the ability to change the reputation of the Chosen One on the spot.
Interactions with the player character
This character has no special interactions.
Chet has no real interactions, as he was merely a tool used to test the different conditions and flags in the game during development.
Chet was a debugging tool and does not appear in the final game.