Armored Core Wiki
ACE Emblem
General information
Classification Raven
Gender Male
Affiliation and military information
Rank -
Craft AC Teifwald
Real world information
Appearances Armored Core: Master of Arena

ACE is a Raven that appears in the Armored Core: Master of Arena Extra Arena. He is a member of the Champions Arena.


A member of the Sahara WPN Core Research Group, his AC is reminiscent of a knight in shining armor.

AC Teifwald[]

AC Teifwald

AC Teifwald

Teifwald is a lightweight two-legged AC equipped with laser cannons on both shoulders, a laser rifle and the MOONLIGHT laser blade. Due to the Human Plus enhancements of the pilot the unit can fire the back mounted laser cannons while moving, fire blade waves and launch into battle overweight.


Despite him not bearing any rank in the Arena, ACE is actually ridiculously tough and is arguably the strongest foe of the entire game. His sheer speed, heavy firepower and alarming accuracy in aiming allows him overwhelm enemies with little to no difficulty.

He abuses all of the Human PLUS abilities that is unlockable throughout Gen 1, and this is evident in his AC loadout: a lightweight AC with heavy cannons mounted on the back. All of his weapons pack a fierce punch and they are all energy based. Notably, his laser cannons can inflict massive damage in just a single shot, not to mention he's surprisingly good with maintaining a constant lock-on you despite having a narrow lockbox and has alarming accuracy. To make it worse, he loves to fly about while raining down explosive energy grenades repeatedly. Fighting him in an open area would be tantamount to suicide, as this gives him all the room he'll ever need to fly and shoot you down with relative ease. Additionally, ACE also packs a surprisingly good amount of defense even while being a lightweight AC, so meager weapons won't be effective against him, making a fair fight against him near impossible.

However, ACE is not unbeatable. The easiest way to beat him is to let him fly up as high as possible (on an open map like the Moon map) until he crosses the boundary line (in the air), thereby allowing you to win without having to fire a single shot. Another way is to pick the parking garage map and if you have Human PLUS, make use of his limited flight ability and hammer away at him when he lands using your Moonlight blade waves, he will go down in no time. Do note that the parking garage strategy is a bit risky, as ACE can still keep a lock on you, no matter where you to try to hide. It would be your best bet to try and get behind him and blow him apart.



  • The general color and appearance of Teifwald is very similar to Stinger's AC Vixen .
  • Although unranked in the Champions Arena, ACE is arguably the toughest opponent to defeat in the entire game, alongside EX300 and Nineball Seraph.