Taibak

From Memory Alpha, the free Star Trek reference

Taibak was a Romulan officer who served in the Romulan Star Empire in the late 24th century.

In 2367, Taibak was part of a mission to capture and brainwash Lieutenant Commander Geordi La Forge. After Commander La Forge was captured from the shuttlecraft Onizuka, he was taken aboard Sela's Warbird. There, Taibak brainwashed Commander La Forge and modified his VISOR to receive E-band emissions. During a holographic simulation, Commander La Forge was forced by Taibak to kill Chief Miles O'Brien on several occasions to ensure that the mind control was functioning. After Taibak was satisfied that Commander La Forge was ready, he was sent back to the USS Enterprise-D. There, Commander La Forge received E-band emissions through his VISOR from a transmitter used by Kell, a Klingon ambassador and traitor to the Klingon Empire. The E-band emissions subconsciously directed Commander La Forge to kill Vagh, a Klingon governor, and destroy the Federation-Klingon Treaty. (TNG: "The Mind's Eye")

Taibak was played by John Fleck and was his first role in Star Trek.