The Wadi were a humanoid species from the Gamma Quadrant initially discovered by a Vulcan ship in 2369. They became the first official species to visit the Alpha Quadrant that the Federation made first contact with.
Taking place in 2409, the computer game Star Trek Online features Wadi duty officers being available for the Federation and Klingon Defense Force factions. The Wadi officers in Star Trek Online have a status quote: "Hey, I know this great game. Want to play?".