The post-apocalyptic Mojave Desert in Fallout: New Vegas is a treacherous place to explore, but players don't have to face it alone. Within the base game, there are numerous permanent companions available for recruitment who can provide valuable assistance.
These companions all contribute to combat, though some are more effective than others for various reasons. Players have the option to equip most companions with different gear, although each companion excels with specific weapon types. Moreover, each of Fallout: New Vegas' companions offer unique perks and occasionally provide services to players.
A-Tier
Arcade Gannon
Boone
Arcade Gannon is a unique companion in Fallout: New Vegas who possesses the rare ability to don Power Armor, much like Veronica. However, Arcade differentiates himself from Veronica by employing a ranged energy weapon, making him a more adaptable fighter in combat situations. Additionally, Arcade's companion perk enhances the healing effects of consumables, enabling players to recover a greater amount of health when utilizing such items.
Boone is a highly regarded character in the Fallout: New Vegas community due to his early availability as a companion. As a loyal member of the NCR, Boone proves to be a lethal sniper regardless of the distance. Furthermore, players benefit from Boone's companion perk, which reveals enemy positions when aiming-down-sights.
ED-E, on the other hand, is an incredibly valuable companion, especially in combat. Players are strongly advised to have ED-E by their side, particularly with the Lonesome Road expansion installed. This character provides a mobile Workbench, Reloading Bench, repairing services, and even supplies free energy weapon ammo. Notably, ED-E is one of the two companions that can be recruited in addition to another companion. While already formidable, players have the option to upgrade either ED-E's weapon or armor.
B-Tier
Raul
Veronica
Raul: While lacking in combat effectiveness, Raul compensates with his array of useful services. Players will benefit from his companion perk, which significantly reduces gear durability loss by up to 75%. Additionally, Raul is able to proficiently repair players' gear even when he is not actively accompanying them.
Veronica: This companion surpasses others in combat strength due to her possession of a formidable Power Fist weapon and ability to don Power Armor. Furthermore, Veronica possesses the invaluable capability of facilitating players' access to the concealed Brotherhood of Steel chapter in Fallout: New Vegas. However, it is worth noting that Veronica's combat range is somewhat limited and her companion perk may be overshadowed by those offered by other companions. Her companion perk grants players access to a mobile workbench, although Ed-E provides players with the same perk while also bestowing several additional resources.
C-Tier
Lily
Rex
Lily: Lily faces the same issue as Veronica with her focus on melee combat in Fallout: New Vegas and because their perks are easily duplicated. However, Lily's preference for close-range combat often puts her in the line of fire, allowing players to safely engage from a distance. Lily's companion perk primarily extends the duration of Stealth-Boys, but players can achieve the same effect for all Chem items by choosing specific perks.
Rex: Alongside Ed-E, Rex is one of the few companions that can be recruited alongside another companion, which is one of their few valuable qualities. Rex's companion perk highlights containers containing valuable items when players aim-down-sights. While there is nothing particularly negative about Rex, other companions are generally more useful and powerful.
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Cass's downfall lies in her companion perk, which is both more temporary and situational compared to perks offered by other companions. However, her unique perk grants players enhanced benefits and eliminates the negative consequences of consuming alcohol.
Fallout: New Vegas is available on PC, PlayStation 3, and Xbox 360.