Tony Todd voices Korban in EF2. He previously played Worf's brother, Kurn, as well as both an adult and elderly Jake Sisko on Deep Space Nine.
J.G. Hertzler, best known in Trek circles as Martok, voices one of the Klingon bosses in the game.
The Other Darrin (voice only): Jeri Ryan was not available to voice Seven Of Nine in EF1 and was replaced. In the Expansion Pack, however, Ryan's voice replaced the replacement's, making her The Other Other Darrin.