Diaadul

Diaadul was a female Trehanna who was was the first officer of the Helios under Demaree Kolovzon.

In 2371, Diaadul came to Deep Space 9 to obtain material to repair the Helios from Quark, as well as Vilis Möhrlein and Kerel Tama. After her ties to the Helios were uncovered by Odo, Diaadul took Miles O'Brien and Kira Nerys hostage and the three were transported to the Helios.