Krajensky
Krajensky was a male Human ambassador who represented the  during the mid-24th century. 

On his way to Risa for an extended vacation in late 2371, he disappeared and was replaced with a Changeling . Starfleet Security believed the real Krajensky had been kidnapped or possibly killed.  ()

Appendices

Background information

The Changeling impersonating Krajensky was played by actor Lawrence Pressman.

According to the script, Krajensky was pronounced as "kra-JEN-skee". Furthermore, in the script, he is described as a "...skilled career politician." 

The real Krajensky's fate was never revealed, though it is worth noting that both Martok and Julian Bashir were taken prisoner, rather than killed, when they were replaced by Changelings.

Apocrypha 
The short story "A Gutted World" gives him the first name Theodore.

External link
 

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