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Castor is a Raven in Armored Core 2. His rank is #33 in the Arena.

Arena AC2 Rank 33 Castor profile 1
AC Name Universal Star
Gender Male
Rank 33
Affiliation Nerves Concord
Appearance(s) Armored Core 2
AC Characteristics
Armor Points 7434
Weight 5563
Price 586700
Offensive Points 1298
Defensive Points 2686
Moving Speed 4450
OB Ability 3000
Grade Below Average
Core Over Boost
Inside None
Extension Anti Missile
Back Unit R Pulse Cannon
Back Unit L Radar
Arm Unit R Pulse Rifle
Arm Unit L Energy Shield


"Eldest of two brothers famous in the Arena. Having been compared to his little brother all his life, he's become extremely competitive. He hates his younger brother."
Arena description.

He is killed in the mission Guard Secret Information by Boyle and Remille Fortner and is working for Emeraude.

AC Universal Star[]

Universal Star is a lightweight bipedal AC equipped with anti missile extensions, a pulse cannon, a back radar, a pulse rifle, an energy shield and an overboost core. In order to use the back mounted pulse cannon the unit needs to kneel.


Due to a lack of a handgun and all energy weapons Castor is not as dangerous as his little brother. As long as you can keep him contained, his constant jetting and energy weapon usage means that he can quickly run out of energy or at the least run low. Also his Pulse Cannon requires that he kneels down to fire. This and his weak AC design means that he will die quickly if he decides to use his Pulse Cannon early and you can start blading him.



  • Castor's name, as well as his brother Pollux's, is a probable reference to Greek mythology. Castor and Pollux were twin brothers in Greek mythology known as the Dioskouri. Castor was the mortal son of Tyndareus, king of Sparta in his time, and Pollux was one of the divine sons of Zeus, the Greek God of Gods. Also unlike the AC2 counterparts, it is believed that Castor and Pollux shared brotherly love; when Castor was killed, Pollux asked Zeus to allow Castor and Pollux to share Pollux's immortality, and thus, Zeus transformed them into the constellation Gemini.
    • Another possibility of reference, albeit unlikely, is the John Woo movie Face/Off, where the main antagonist Castor Troy has a brother named Pollux. However, unlike their AC2 counterparts, Castor and Pollux show a great deal of brotherly love towards each other.



Armored Core 2 -EX33- - Arena -34 Castor