Tunnel Snakes

The Tunnel Snakes are a gang in Vault 101.

Background
They wear black jackets over their vault suits. The members of the gang are Butch DeLoria, Wally Mack and Paul Hannon Jr. One other vault resident, Freddie Gomez, desires membership in the Tunnel Snakes gang, and the gang members approve of Freddie's bullying of his peers. Freddie's father, Officer Gomez, disapproves of his son's association with the gang.

During the Lone Wanderer's tenth birthday, Butch discusses possible gang names. Wally suggests "Mackers" and "Hell's Overseers" whereas, Paul suggests "Grease Weasels," "Vaultikins" and "Vault Dwellers." Butch suggests "Vault Rats" and "Vault Snakes." During Escape!, if the Wanderer accesses the overseer's computer, they read that the overseer secretly used the Tunnel Snakes to harass residents in situations where having his security force do so would be undesirable. The Lone Wanderer also has the opportunity to become an honorary member of the Tunnel Snakes.

The gang members harass Amata Almodovar near the classroom. They chide her for being a "daddy's girl" and the daughter of the overseer. In this situation, the Lone Wanderer can choose one of three possible paths. The paths could involve them helping Amata for good Karma, helping the Tunnel Snakes for bad Karma or ignoring it and forcing Amata to resolve the situation herself.

After the Lone Wanderer leaves the vault, Paul dies due to injuries incurred in the event and Wally Mack leaves the group, resulting in Butch remaining as the only original member. He is found in Rivet City and will express his desire to start up the gang again.

Creation Club
Wally Mack moves beyond 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 some point later, 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.

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