(Capcom's primary storyline)
The Umbrella Corporation, abreviated as Umbrella Co., is an organization formed several years after the collapse of the conglomerate of the same name. Their relationship is unknown, though both are known to have played roles in the development of bioweapons.
Umbrella Co. is known to have a paramilitary arm made up of highly trained mercenaries, whose chief mission is to recover abandoned bioweapons research from the original Umbrella as well as eliminating troops loyal to rival bioweapon developers.
Two years after the Global Bioterrorist Attacks, these mercenaries became active in infiltrating quarantined zones, taking advantage of the BSAA's inability to sterilize all sites of bio-terror attacks. One notable mercenary, 3A-7, acted under the supervision of Abraham Jackson and Beatrice Bertrand, as they gave him various objectives.
Between 2014 and 2017, Umbrella Co. began covertly monitoring the Baker ranch in Dulvey, Louisiana. A rival organization had lost an advanced bioweapon named "Eveline", whose existence posed a threat to Umbrella Co.'s industry shares. In July 2017, the organization sent soldiers to the Baker ranch and rescued civilian Ethan Winters and his wife Mia after helping to neutralize "Eveline".
Mercenaries that were part of Umbrella Co. often came into contact with other mercenaries within the locales they were sent to, hired by opposing companies with the same objectives. Quite frequently, independent "Zombie Hunters" were encountered infiltrating the same places for the single purpose of neutralizing B.O.Ws for thrill seeking purposes.
Most of the equipment these mercenaries used was improvised mountain climbing gear, including:
- The "Debrainer" or "Cronus", known only as the "Zombie Beil" (ゾンビバイル Zonbibairu ) in Japan: a modified ice ax intended for destroying the link between the cerebrum and spinal cord.
- The "Tactical Shield", known as the "Bite Guard" (ベイトガード Beitogādo ) in Japan: an armored attachment to the arm which deflects bullets. It contains a sticky resin which can prevent zombies getting any closer should they get stuck.
- The "Terrain Spikes", known as the "Zombie Climbing Irons" (ゾンビアイゼン Zonbiaizen ) in Japan: these studded boots are used to destroy the heads of crawling and downed zombies to prevent any further attacks.
- The "Zombie Jammer" (ゾンビジャマー Zonbijamā ): a device which emits electromagnetic radiation designed to disorient nearby zombies, thus preventing the user from being attacked. The official website recommends destroying an enemy's jammer to prevent them escaping.
In terms of weaponry, mercenaries carry firearms that don't hinder their mobility such as PDWs, compact shotguns and hand-to-hand combat.