Theodore Krajensky

Krajensky was a Federation Ambassador in the 24th Century. He was an old friend of Benjamin Sisko and considered by many as an expert on the Tzenkethi Coalition, but disliked the ruling Auturch.

Krajensky was scheduled for a vacation on Risa, but along the way, he was intercepted and murdered by a Changeling who took his place. Changeling-Krajensky then went to Deep Space Nine and ordered newly promoted-Captain Sisko to take him into Tzrenkethi Space as a plan to cause a war between the 2 powers and weaken them as a prelude to the immenint Dominion War, however, the plot was discovered and the changeling was accidently killed by Odo (which would later cause him to return to the Great Link and be turned into a Solid).

Krajensky's body was never found. (DS9 Episode: The Adversary)