XFA-33 Fenrir

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The XFA-33 Fenrir (Fenrir in older Ace Combat games) is an original next-generation combat aircraft from the Strangereal universe. It made its first console appearance in Ace Combat Infinity, previously debuting on the handheld Ace Combat X: Skies of Deception and Ace Combat: Joint Assault.



The Fenrir was created by Leasath under Diego Navarro's instructions following the destruction of the Gleipnir over Santa Elva. The aircraft was created using battle data acquired by the airborne fortress.[1] The aircraft's production and development was held at Sentry Island, within Archelon Fortress.[2]


Following the Fenrir's completion, Navarro contacted the elite Alect Squadron to pilot 4 of the finished units. The squadron would reach Archelon Fortress via the Danern Straits. Additionally, a new weapon, the High-Powered Microwave, was also being developed and transported for use by the aircraft.[3]

Navarro also planned to unveil the Fenrir in Alendal, Leasath's capital city.[4]

While the Alect Squadron successfully reached the stronghold, the HPM was destroyed while it was being transported from Cobalt Cave.[5]

Once the Aurelian Air Force's Gryphus and Aquila Squadron had reached Sentry Island, Alect Squadron, now piloting the Fenrir, quickly took off. In a hectic dogfight, all Alect pilots were shot down. However, another Fenrir, holding valuable date from the battle, was taking off from within Archelon Fortress but was quickly shot down by Gryphus One. The fortress was soon engulfed in flames.[6]

Destroyed Fenrir

The shattered Fenrir in Alendal

With the destruction of the fortress and Fenrir playing live at Navarro's unveiling, the citizens stormed in on him and destroyed the Fenrir model being shown to the public.[7]


After the war, many of the intact remains were retrieved from the ruins to be inspected by Aurelian engineers. It was then reproduced for research purposes, without the VTOL and optical camouflage systems. It was given the designation "XFA-33 Fenrir".[2]

General Analysis

Developed as the only mass-production fighter debuting in 2020, the Fenrir is distinguished by its unusually large body. It uses a polyhedral cropped delta configuration with bent wingtips, a V-tail, canards and dual air intakes. The frontal landing gear is housed within the mouth-like pod beneath the cockpit. It uses dual thrust vectoring engines, aided by a smaller power plant between both, which give it V/STOL capabilities.

Following the standard set by aircraft of the era, it uses Connection for Flight Interface hardware for control. The cockpit uses a dashboard with a digital interface that displays vital information of the aircraft, along with a 3D render of the Fenrir that first acted as a compass, but has since been updated to show the position of the aircraft in a virtual space as if the display itself was stationary.


The Fenrir was primarily designed to operate with the experimental technologies researched in Leasath. The jet can use a downscaled version of the optical camouflage system used by the Gleipnir, as well as an experimental microwave weapon. The stealth system's reduced size requires the jet to work with a ground emitter, yet retains the vulnerability of the Gleipnir to malfunctioning from damage feedback; technological constraints related to it were the reason behind its COFFIN system. The microwave system, on the other hand, works through the intersection of plasma beams generated by a ground station and the Fenrir itself, which generates the creation of ball lightning designed to ignite the fuel tanks of enemy aircraft.

Its main weapons consist of dual machine guns and short-range missiles along with air-to-air and air-to-surface missiles, the initial models were also designed to use a small-scale version of the Shock Wave Ballistic Missile used by the Gleipnir. The Fenrirs obtained by Aurelia from Archelon Fortress's wreckage could not use neither optical camouflage nor microwave, but the lack of the required systems made them lighter, and thus more maneuverable.

Game Analysis

Ace Combat Infinity

"A large-scale special attacker aircraft developed by a small country in the southern hemisphere. It was originally created as a demonstration aircraft to display the high-level technical capabilities of a military-industrial complex, but the fortress which acted as a base for the aircraft's development and production was destroyed. A certain country discovered the remains of the aircraft and reproduced it for research. Unlike the prototype aircraft, it doesn't come equipped with optical camouflage or VTOL systems, but it's lighter and features improved maneuverability, resulting in an aircraft that is more suitable for real combat."

How to Unlock

The Fenrir is available through the Aircraft Tree.
Stats and Prices Lv.1-10
Lv. Cst SP MO ST AA AG DF Price
1 825 C+ C+ B B C+ D+ 4,590,000
2 874 B C+ B B C+ C 2,727,000
3 923 B+ B B+ B B C+ 3,942,000
4 972 A B+ B+ B+ B B 4,644,000
5 1021 A B+ A A B B+ 7,047,000
6 1070 A+ A A A B+ A 14,850,000
7 1119 A+ A A A B+ A+ 7,290,000
8 1168 S A+ A+ A A S 8,100,000
9 1217 S S A+ A+ A S+ 8,910,000
10 1266 S+ S A+ A+ A S+ 9,990,000
Stats and Prices Lv.11-20
Lv. Cst SP MO ST AA AG DF Price
11 1317 S+ S+ S A+ A S+ 11,070,000
12 1368 S+ S+ S A+ A+ S+ 12,690,000
13 1419 S+ S+ S S A+ S++ 13,500,000
14 1470 S+ S+ S+ S A+ S++ 15,525,000
15 1521 S+ S+ S+ S A+ S++ 17,010,000
16 1591 S++ S+ S+ S S S++ 22,464,000
17 1654 S++ S+ S+ S+ S S++ 25,650,000
18 1717 S++ S+ S+ S+ S S+++ 28,863,000
19 1780 S++ S++ S+ S+ S S+++ 36,882,000
20 1843 S++ S++ S+ S+ S+ S+++ 46,521,000

Credit Price Calculator
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Weapon Ammo Lv.1-10
1 520 136 14
2 590 138 16
3 660 140 18
4 730 142 20 40
5 800 144 22 44
6 856 146 24 48
7 912 148 26 52 3
8 968 150 28 56 3
9 1024 152 29 60 4
10 1080 154 30 64 4
Weapon Ammo Lv.11-20
11 1136 158 31 66 5
12 1192 162 32 68 5
13 1248 166 33 70 6
14 1304 170 34 72 6
15 1360 174 36 76 7
16 1416 176 37 78 8
17 1472 178 38 80 8
18 1528 180 39 82 9
19 1584 182 40 84 9
20 1640 184 42 88 10

Part Slots
These are the minimum / maximum part slots this aircraft carries at the respective levels. Part slots can be added until they reach maximum by repeatedly sortieing with the aircraft; see Tuning for more information. A maximum of 7 parts can be equipped at any time, regardless of available slots.

BODY / Max ARMS / Max MISC / Max
Lv.1-5 36 / 38 36 / 38 36 / 38
Lv.6-14 38 / 40 38 / 40 38 / 40
Lv.15-19 39 / 41 39 / 41 39 / 41
Lv.20 40 / 42 40 / 42 40 / 42

Upgrading this aircraft to these levels will unlock the respective nicknames for use at any time.

  • Lv.3: Wolfpack
  • Lv.10: World Eater
  • Lv.15: Twilight of the Gods
  • Lv.20: Lone Wolf

Skin Galleries


Air superiority gray camouflage


XFA-33 Event Skin -01


Desert brown body with with black body trim and nose; based on the Special 2 color from Ace Combat X: Skies of Deception



Ace Combat: Joint Assault

"A special attacker with mysterious capabilities and amazing maneuverability."

How to Unlock

The Fenrir is unlocked for purchase upon completing mission Reprisal (21A) within Ace difficulty after on second playthrough or thereafter in overall. Costs $824,000.


ACJA Fenrir stats



  • Color 1: Light grey
  • Color 2: Alect Squadron livery, Black with white accent
  • Color 3: Blue livery
  • Color 4: Cream livery with black nose
  • Color 5: God Eater collaboration theme
  • Color 6: Ocean livery

Named Pilots


Ace Combat X: Skies of Deception

"An advanced fighter developed using tactical battle data gathered on the Gleipnir."

How to Unlock

Complete the campaign in Ace difficulty. Costs 215,000 credits.


ACX Statistics Fenrir


Named Pilots


  • Aurelia: Plain gray
  • Leasath: Alect Squadron livery, Solid black with white wing/stabilizer accent. Available upon unlocking all available paint schemes
  • Special 1: Dark blue. Unlocked by S-ranking Operation X in Ace difficulty
  • Special 2: Desert brown with gray nose and body trim. Fill the aircraft's Kill Bar to unlock



  • The aircraft is named after a mythical wolf from Norse mythology, and the son of Loki. Odin's son, Víðarr, slays Fenrir in battle. This is referred in the Ace Combat X medal "The Mark of Vioarr", earned by finishing either final mission.
  • The Fenrir bears a resemblance to the Super Sylph B-503 from Sentō Yōsei Yukikaze. This similarity is specially notable in the design of the wings and the mouth-like protrusion beneath the Fenrir's nose.
  • The hologram of the Fenrir in the cockpit always faces north no matter which direction the aircraft faces, suggesting it is meant to act as a compass. However, in Ace Combat: Joint Assault, the hologram no longer rotates. It is unknown if this is a glitch or if it was done on purpose by Project Aces.
    • This was later fixed in Infinity, where the hologram is shown to mimic the plane's movements.
  • In the mission End of Deception II, one of the pilots from the Aquila Squadron said that "Fenrir suddenly stopped in mid air", suggesting it has VTOL capabilities. This was supported because the Fenrir has three engines and when it slows down, the middle engine points its exhaust downward, similar to an AV-8B Harrier II's thrust vectoring nozzles.
    • The description in Infinity confirms this by stating that the XFA-33 "does not come equipped with optical camouflage and VTOL capabilities, unlike the prototype aircraft". It's possible that Aurelia did this to cut down reproduction costs.
  • One of Bandai Namco's other franchises, God Eater, feature an organization called "Fenrir", sharing its name with the Ace Combat aircraft. Fittingly enough, the Fenrir has an unlockable God Eater-themed collaboration livery in Joint Assault. As well, a Fenrir emblem was available to all players during a God Eater-themed Collaboration Event in Infinity.
  • In early concept art, the F-3 Shinden II used a similar wing configuration to the Fenrir.
  • In Ace Combat Zero, one of the allies you fly with is named Fenrir 4 (Heard through mission dialogue)
  • Unlike many other aircraft, the plane was never given an official designation, only being listed with its nickname, "Fenrir". The designation was finally revealed in Infinity, which labelled the aircraft as XFA-33. The description of the aircraft in Infinity states the Aurelia managed to seize the remains of Fenrir and reproduce the latter, giving it the designation of "XFA-33".


  1. Fenrir hangar description. Ace Combat X: Skies of Deception.
  2. 2.0 2.1 XFA-33 Fenrir hangar description. Ace Combat Infinity.
  3. Cutscene following Wild Card. Ace Combat X: Skies of Deception.
  4. Cutscene prior to End of Deception II. Ace Combat X: Skies of Deception.
  5. Fire Storm. Ace Combat X: Skies of Deception.
  6. End of Deception II. Ace Combat X: Skies of Deception.
  7. Cutscene following End of Deception II. Ace Combat X: Skies of Deception.

Start a Discussion Discussions about XFA-33 Fenrir

  • Which plane should I purchase?

    18 messages
    • I am having the same problem, which top tier plane to buy, but after reading this I think I might just update the X02, although I have a level...
    • Invest in an X-02 Wyvern since its price is cheap enough to have your own superfighter and it has the ideal special weapons needed for ...
  • how to shoot it down

    3 messages
    • Wrong subforum buddy
    • Did you know there's an easier way to kill the Alect Fenrir? Destroy the generator when the ground forces tell you to. It'll disa...

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