The MiG-31B Foxhound is a Cold War-era 4th-generation fighter aircraft. It features improvements over both the the standard MiG-31 and MiG-31M, including upgraded avionics and in-flight refueling capabilities.



The MiG-31B Foxhounds were fielded in the Lighthouse War, during the war they were operated by the Erusean Air Force as an interceptor aircraft. During Operation Magic Spear, an Erusean MiG-31B ace named Owen Corwin, callsign "Comet", was shot down by Trigger.[1] They were also utilized in Operation Sighthound to defend the Alicorn in Artiglio Port.[2] During Operation Domino, the Hrotti Squadron used four MiG-31s with no loaded missiles and only their machine guns to distract the Strider Squadron while giving other allied squadrons enough time to enter the airspace.[3]

Assault Horizon universe

During the bombing raid at the Caucasus mountains, a bomber flown by Janice Rehl and her co-pilot Flynn were being pursued by a flight of several examples of the NRF-aligned MiG-31B. Fortunately for the bomber flight, Warwolf Squadron and Red Moon Squadron arrived in time to shoot down the interceptors.

Infinity universe

Along with the MiG-21bis and MiG-29A Fulcrum, the MiG-31B Foxhound was obtained by Wernher and Noah Enterprises and used for their Advanced Automated Aviation Plants. Mercenaries affiliated with the United Nations Forces utilized the aircraft during Operation Eternal Liberation against the USEA Federation, who also possessed many units of the aircraft.

Game Analysis

Ace Combat 7: Skies Unknown

"A large interceptor that boasts high speeds on a world-class scale. It boasts long-range air-to-air missiles loaded with the latest avionics, as well as the ability to fly at high speeds in order to intercept cruise missiles."

How to Unlock

The MiG-31B is available on the Aircraft Tree and it costs 280,000 MRP. It requires purchasing the MiG-29A Fulcrum.




Part Slots

BODY: 36
ARMS: 36
MISC: 36

Named Pilots

  • Owen Corwin (COMET)


  1. Osea: Grey body with black nose.
  2. Erusea: Green/beige/brown camouflage. Based on the MiG-25BM's camo scheme. (Unlocked by sortieing 100 times in multiplayer mode)
  3. Special: Grey with blue, black, and white stripes. Based on the MiG-31 "374" livery. (UNLOCK: Shoot down COMET)
  4. Mage: Osea skin with Mage Squadron markings
  5. Spare: Osea skin with Spare Squadron markings
  6. Strider: Osea skin with Strider Squadron markings
  7. Schwarze: Schwarze Team livery
  8. Varcolac: Varcolac Squadron livery


Ace Combat Infinity

"This interceptor is the former Soviet Union's first 4th generation aircraft. Derived from the MiG-25, the aircraft has been heavily modified. Unlike the MiG-25, which is an interceptor that excels at high altitudes, this aircraft is capable of supersonic flight even at low altitudes. Thanks to its high engine thrust, it can reach a top speed close to mach 3.[sic] In addition, this aircraft has excellent air defense capabilities. The NATO codename for it is "Foxhound"."

How to Unlock

The MiG-31B is available for research on the Aircraft Tree after purchasing the MiG-29 Fulcrum.
1 550 1,710 108 90 12 B E+ E D+ E E
2 588 33,200 118 94 16 B+ D E+ D+ E E+
3 626 37,670 129 98 20 B+ D+ E+ C E D
4 664 47,880 139 102 24 12 A D+ D C+ E+ D+
5 702 83,000 150 106 28 14 A+ C D C+ E+ C
6 740 144,710[a] 161 112 32 16 A+ C+ D C+ E+ C+
7 778 69,160 172 116 34 17 13 S C+ D+ B E+ B
8 816 102,150 183 120 36 18 14 S B D+ B E+ B+
9 854 263,880 194 124 38 19 15 S+ B+ D+ B+ D A
10 892 813,960 206 128 40 20 16 S+ B+ C B+ D A
11 939 1,659,840 217 132 42 21 17 S+ A C A D A
12 986 2,202,480 228 136 44 22 18 S+ A+ C+ A D S
13 1033 2,755,760 239 140 46 23 19 S+ A+ C+ A+ D+ S+
14 1080 3,862,320 250 144 48 24 20 S+ S B S D+ S+
15 1127 4,415,600 262 148 52 26 22 S++ S B S+ D+ S+
16 1186 7,724,640 271 150 54 27 23 S++ S+ B+ S+ D+ S+
17 1245 5,522,160 280 152 56 28 24 S++ S+ B+ S+ C S+
18 1304 7,171,360 289 154 58 29 25 S++ S+ B+ S+ C S++
19 1363 8,831,200 298 156 60 30 26 S++ S+ A S+ C S++
20 1422 11,033,680 308 158 64 32 28 S++ S+ A S+ C+ S++
Part Slots
At Lv.1, this aircraft carried 18 BODY, 16 ARMS, and 17 MISC part slots. See Tuning § Slot Expansion for further information.
Upgrading this aircraft to these levels unlocked the respective nicknames for use at any time.
  • Lv.3: Hunting Dog
  • Lv.10: Dragster
  • Lv.15: Embodiment of Speed
  • Lv.20: Black Dog

Skin Galleries


Standard grey paint




Schwarze Team livery



MiG-31B Event Skin 01 Icon.jpg


Three-tone blue and gray camouflage



Ace Combat: Assault Horizon

How to Unlock

The MiG-31B is not available to the player in this game. It is only controlled by enemy AI, especially during Launch.



  1. Players could use one Nonstandard Upgrade Request Form instead of credits for the Lv.6 upgrade.