Tunnel Snakes

The Tunnel Snakes are a gang formed in Vault 101.

Fallout 3
Prior to the formation of the gang, Butch, Paul Hannon and Wally Mack discussed possible names for a gang during the Lone Wanderer's tenth birthday. Butch suggested the Vault Rats, Vault Snakes and Tunnel Rats, Paul suggested the Vault Kings, Vault Dwellers and The Grease Weasels, and Wally suggested Hell's Overseers, The Mackers and Wally and the Big Cheese.

Members of the Tunnel Snakes wear leather jackets adorned with a snake on the back, worn directly over their Vault Jumpsuits. Butch serves as the gang's leader, with Paul Hannon and Wally Mack being members. Freddie Gomez desires membership in the gang, and the members approve of Freddie's bullying of his peers. Freddie's father, Officer Gomez, disapproves of his son's association with the gang. The Overseer of Vault 101 has enlisted the services of the gang on several occasions, having meetings directly with Butch.

Fallout 4
In the Tunnel Snakes Rule! Creation, Wally Mack left the Capital Wasteland and arrived in the Commonwealth to found his own group of Tunnel Snakes. The group eventually took hold underground in an abandoned unmarked subway station near the Chestnut Hillock Reservoir. One of the subway cars had a ton of radioactive waste, raising some concerns. But Wally dismissed this, believing that the radiation could give them "superpowers."

At a later point, the Tunnel Snakes had a brief skirmish with a group of Gunners, driving them off and capturing one of their members, from whom they took an intricately engraved gun called the Ultimatum. By the time they had celebrated their victory, many members of the group had developed radiation sickness. Eventually, many members of the group had succumbed to the radiation poisoning while others had turned into Feral Ghouls.

Gameplay
During the quest Future Imperfect, Butch, Paul Hannon and Wally Mack are seen harassing Amata outside of Mr. Brotch's classroom. The player can either ignore them, assisting Amata for good Karma or assisting the Tunnel Snakes for bad Karma.

During the quest Escape!, Butch will approach the player to save his mother, Ellen DeLoria, from three Radroaches. The player can press him about joining the Tunnel Snakes, in exchange for saving her. If the player saves her, Butch rewards the player with his Tunnel Snake Outfit. If the player convinces him to save her through a successful Speech challenge, he will state that the Radroachers aren't "aren't anything [he] can't handle," adding that "Tunnel Snakes rule!"

During the quest Trouble on the Homefront, Wally Mack mentions that Paul "got bit real bad" by some Radroaches, and succumbed to his injuries. He also states that he left the Tunnel Snakes before the rebellion began. Members of the Tunnel Snakes are also mentioned to serve as muscle for the rebels, led by Amata and Mr. Brotch.

Following the events of the former quest, Butch can later be found at Rivet City, where he expresses a desire to start up the gang again.

Appearances
The Tunnel Snakes appear in Fallout 3 and are mentioned in Fallout 4.