Duo

A Duo is an instanced are designed for completion by two players working cooperatively. Currently, there are four duos available in DC Universe Online.

Access
In order to enter a Duo, players must queue up using the group tool (Default PC Key 'Y'), and choose appropriate roles they wish to fulfill. They will then be placed in a queue that searches for other players who wish to do the same duo, and be prompted to enter the instance.

Rewards
Upon completing a Duo, players will receive 2 Marks of Triumph, in addition to any loot the boss happens to drop. Additionally, if the Duo was marked as the "daily" by a star, players will receive 1 Mark of Distinction.

HIVE Base
In the HIVE Base Duo, players face off against Queen Bee Zazzala's minions, as well as an enslaved Booster Gold.

Bosses:
 * Captain Honeygut
 * Captain Bumble
 * Booster Gold
 * Queen Bee Zazzala

Gotham University
In the Gotham University Duo, players fight off the soulless minions of Faust as they attempt to prevent him from resurrecting Isis, Black Adam's deceased lover, in an attempt to steal the powers of Shazam.

Bosses:
 * Soulless Lord
 * Necro Magent Gruhn
 * Undead Isis

Underground Laboratory
In the Underground Laboratory Duo, players fight against Gorilla Grodd's devolved humans and gorilla minions, eventually assisting The Flash to defeat him.

Bosses:
 * Captain Shortly
 * Zoom
 * Gorilla Grodd

OMAC Base
In the OMAC Base Duo, players assist Fire in travelling to the Gotham sewer in order to put a stop to Brother Eye's nefarious plans.

Bosses:
 * OMAC Incinerator
 * OMAC Delta
 * OMAC Sigma