Dennis

* Characters:
** Dennis Allen, a deceased United States Army soldier in Fallout.
** Dennis Presnell (Fallout 2), a deceased person, mentioned in Fallout 2.
** Dennis Crocker, the ambassador to New Vegas for the New California Republic in Fallout: New Vegas.
** Dennis (Fallout: New Vegas), a prisoner of the Fiends in Vault 3 in Fallout: New Vegas .
** Dennis (Strip letter), a visitor to the New Vegas Strip, mentioned in Fallout: New Vegas.
* Real-life people:
** Dennis Mejillones, a developer who worked at Bethesda Softworks as a character artist on Fallout 4 and credited with special thanks on Fallout 76.
** Dennis Presnell, a developer who worked at Interplay Entertainment as a quality assurance tester on Fallout and Fallout 2 and credited with special thanks on Fallout: New Vegas.