Star Trek Online: Agents of Yesterday is the third expansion pack to the massively multiplayer online role-playing game Star Trek Online. It was released on 6 July 2016. It allows players to make a new character in a new faction: 23rd century Starfleet.
Confirmed voice actors and characters
The expansion features the voice talents of Walter Koenig, Christopher Doohan, Matt Winston, Vic Mignogna, Joseph Gatt, and Chase Masterson. Spock also makes an appearance in the expansion, albeit with re-purposed lines from Leonard Nimoy's opening and sector block narrations.
Additional TOS characters
Other characters from The Original Series appear without voice-acting and some have dialogue snippets from the Original Series, including Enterprise crew members Nyota Uhura, Hikaru Sulu, Mears, Leslie, Elizabeth Palmer, and Bill Hadley, as well as diplomats Sarek and Gav. James T. Kirk appears briefly in Return to Babel, albeit without dialog.
Joseph Gatt portrays 0718, an augmented science officer from the U.S.S. Enterprise of the Kelvin timeline, as depicted in Star Trek Into Darkness. Lieutenant 0718 appears alongside other elements from that universe, including the re-imagined Constitution-class and the Klingon D4x-class. This is the first appearance of elements from the rebooted Star Trek movies in-game since the Red Matter Capacitor, which was available as a bonus item for special release editions of Star Trek Online in 2009.