Armored Core: Master of Arena/Arena

Consisting of approximately 50 Ravens (including the player character), it was split up into two sections: the Arena and the Sub-Arena. The lower half of the opponents in the Sub-Arena only appear after you have beaten the story. In order to participate in the Arena, a Raven first had to find a sponsor, then enter the Sub-Arena. Upon defeating all Ravens, he or she would be able to go to the Arena.

There is also a bonus EX Arena consisting of four separate Arenas with different leg types.

The Arena

Rank	Raven	AC
1	Hustler One	Nine-Ball
2	Pandora	Tragedy
3	Max	Great S.
4	No. 03627	P27
5	Rob	Sleek
6	POW.H	Auto
7	Carson	Albatross
8	Pascal	Charger
9	Brothers	Double Take
10	Fayde	Shadow Master
11	Spin Kid	Bad Moon
12	Sherbert	FOG 3
13	Bug Collector	Swallow Tail
14	Prime	The Wolf
15	William	Icy Blue

Sub-Arena

Raven	AC
Ninya	Stalker
Sweet Devil	Evil Kiss
Fritz	Barrel
LD	Poison Tail
Hyptismo	Haunted
Bugzy	Hercules
Inky	Regulon
Armadillo	Hard Scale
Superb Hunter	Super Bow
Flash	Light Maker
Maeve	FOG 2
Frog Man	Lucky Hopper
Ideal	Goldy
Locagos	Toll-Keeper
Noble	Starmine
Advantage	Shield IX
Stunt Rider	Funky Flyer
Bibs	Speedy Rig
Blaster	Diamond Wing
Triad	Protector
Ivy	Arachnid
Decorator	Floro-Glo
Blitz	Fighter
Top Cap	Track King
Evolve	Orders
Welder	FOG 4
Fletch	Cool Wind
Bomber	Rain Bomb
Flipper	Junk Bit
Bolt	Peregrine
Target	Dead On
Gryphon	Nails
Libra	Tightrope
No Problem	Angst
Player character	-

EX Arena

A bonus segment consisting of four separate Arenas with different leg types. In order to participate in one of these Arena you need to be equipped with the same leg type as the Arena. As the player proceeds through the game more Extra Arenas are unlocked. There also is a custom Arena in which the player can fight against their own AC designs.

Humanoid Leg Arena

Humanoid Legged ACs Only

Rank	Raven	AC
1	Ernst	Phoenix
2	Moon	Crescent Ib
3	Vlad	Fallen Fortune
4	D. Deep	No Line
5	Rianon	Cthtraeth
6	Adverse	Power V2
7	Invisible Q	Bounty
8	Seafarer	Conquistador
9	Zweit	Wieder
10	Player character	-

Reverse Joint

Reverse Joint Legged ACs Only

Rank	Raven	AC
1	Dynamite	Blockbuster
2	Kroeger	Primate
3	RT	Takeoff
4	Trust	Unfold
5	Bloom	Blue Petal
6	Pest	Red Petal
7	Swimmer	Odd Fish
8	Strangle	Bulky Hand
9	Pellen	45
10	Player character	-

Four Legs

Four Legged ACs Only

Rank	Raven	AC
1	Tall Spot	Wild Fin
2	Searcher	No Limit
3	Karl	Blood Lizard
4	Lynx Minx	Kitten
5	Proverbio	Terror
6	Solitude	Ancient
7	Depiction	Smoke
8	Orbit	Colossus
9	Dual Assault	Micro Satellite
10	Player character	-

Caterpillar

Caterpillar ACs Only

Rank	Raven	AC
1	Tread	Commander
2	Milo	Ragnor
3	Bullet	Powder Magazine
4	Scorch	Energy Shell
5	Hound	Fenrir
6	Moby	Wrath
7	DOUBLE57	Darkness
8	Warren	Chariot
9	Artemis	Pressure
10	Player character	-

Fromsoft

FROM Software Employee ACs

Rank	Raven	AC
1	Jin	Chief Director
2	Karasawa	Blossom
3	Nabeshima	Gas Gold
4	Okamura	Skier
5	Kawate	Highlander
6	Kamimura	Speed Demon
7	Kani	CRAB. H
8	Koho's	Pale Noel
9	Suzuki	Blue Demon
10	Player character	-

Guest

Japanese magazine publishers' AC.

Raven	AC
Third Generation	Red Hooligan
Yahata	PandemoniumOmega
Tsubasa	Atom Splitter
Kobei	Maniac Nurse
Samarai	DOR-EMN
Dengeki Fuuga	Robo-Bunny
Dengeki Tokkii	Version D
Dengeki Maoh	Avalon
Dengeki Hagewin	Toy Soldier
Dengeki Kimitan	Black Cat
Hyper	A17-mkIII
Hyper	Blue Flame Ver.1
Hyper	Blue Flame Ver.2
Hyper	W FANG
Hyper	PAK1998
Famitsu	HANAGe X
Famitsu	Nabe Kogeta
Famitsu	Mochi Kogeta
Famitsu	Hanimaru
Famitsu	Sigma
Famitsu Taro	Mikami No. 1
Famitsu Jiro	Mikami V3
Famitsu Saburo	Mikami Amazon
Famitsu Shiro	MikamiMan
Famitsu Goro	Mikami Black
Hakaiou	Black Dragon
Hikooki	Blue Wind
Kongoki	Solid
Destroyer	Ryuuketsu Sanji
Fire Demon	Shyder
Player character	-

Champion

Japanese ACPP tournament ACs.

Raven	AC
Nanano RNG	Well Ell
Izumo Makoto	Anubis Nishiki
Tokugawa Issei	Big Shogun
YOU	Paradise Lost
Zaki	Gila
Darkhawk	Steel Hawk
Hibiki Reine	Morrian
Yomotsu Cain	Automaton Elaine
Ausraze	Freelancer
SUU	HM-ice
Freddy	Crow Hunter
ACE	Teifwald
Efene	Hi-Jihad
Doll	NIght Sword
Siren	ATHENA X
Player character	-

Master

Extra difficult AC Arena.

Rank	Raven	AC
1	Napoleon	Subjugator
2	Fokker	One-on-One
3	Masquerade	Witch
4	Feint	FOG 5
5	Clover	Equation
6	Adler	FOG 1
7	Freeway	First Lady
8	Eddy M.	Blackhole
9	Patch	Parsec
10	Fackel	Unicorn
11	ONZE	Missed Shot
12	Gabrielle	Angel
13	Firecracker	Concussion
14	Phreak	Double Fear
15	Phantom	Nightwalker
16	Detective	Mr. Big
17	EX300	SVC-4500
18	Dangerous B	Relic
19	Wataru	Tea-Bagger
20	Player character	-

Armored Core: Master of Arena
Arena	Enter subpage
Characters	Hustler One • Lana Nielson
Enemies	Enter subpage
Locations	Isaac City
Missions	Enter subpage
Organizations	PROGTECH • Ravens' Nest
Parts	Enter subpage
Technologies	Armored Cores • Human PLUS • Muscle Tracers
Others	Credits • Emblems • Mail