Armored Robotic Custodian

The Armored Robotic Custodian is a large sentinel robot designed to fend off invaders within the Batcave: Inner Sanctum.

The sentinel is the first boss encountered in the Batcave: Inner Sanctum raid.

Involvement

 * Brother Eye and Brainiac have taken over the Batcave's mainframe and, along with it, the substantial automated defense and security forces. Both heroes and villains battle against Earth's real enemy in this 8-player raid.

Combat Tips
The A.R.C. will start out with only one ability - the Clean Sweep Protocol, which creates a huge torrent, knocking back players and objects alike. However, every time it loses about 20% hp it will protect itself with a shield, becoming immune to all damage and taunts and will chase a random player while reinforcements arrive. After approximately 30 seconds it will consume one of the drones and gain a new ability based on the type of drone consumed:
 * Wing Armor - creates a vortex that will suck in all nearby players and objects, dealing damage
 * Omega Sentry - powerful sonic attack severely damages all players within medium range of A.R.C
 * Sentry Drone -
 * OMAC Prime - a Whirlwind Attack almost identical to the one used by the Primes, but with an added tornado effect
 * OMAC - an Energy Blast barrage that will be targeted at the tank. This does huge ammounts of damage and needs to be dodged
 * Arrester Drone - a beam that will stunlock and damage the tank. Unbreakable
 * Pacifier Drone - a significantly more potent Riot Foam beam that will always encase it's target after several seconds - lasts 5 seconds and is unbreakable

Due to the high ammount of damage and AE knockbacks this boss does in close to medium range, it is highly recommended that everyone including the tanks stay as far away as possible, especially after 2 or more drones have been consumed. The raid can focus down different types of enemy drones to deny the A.R.C. access to their abilites, but once a drone has been targeted (encased in a glowing red forcefield) it will be consumed.

The main threat is the Omac-derived Energy Blast which will fire many fast moving and high damaging aimed projectiles. As a rule of thumb tanks should always fight it at range when possible to better avoid this.