Allasar was a Starfleet ensign who served on Deep Space 9.
In 2386, Allasar reported to Captain Ro Laren that an unidentified vessel had emerged from the Bajoran wormhole and was transmitting a message directly to Ro. (DS9 novels: Ascendance, The Long Mirage)
Several days later, Allasar reported to Miles O'Brien that Odo had returned to the station. (DS9 novel: The Long Mirage)