Zirildeler

Zirildeler Keshang-Illir Lorzuden Kor, called Ziril by Omerók, is a duergar engineer that Omerók knew and worked with before leaving the underdark.

When the party first met Charles Harper, he mentioned Zirildeler and Visera Maelstrom as being two engineers who could surpass him.

In the Shadowfell, the party saw a vision of Zirildeler working on some kind of toxic gas.

After Craig Firebrand was captured by the Forsaken, Omerók scryed on Craig and saw Craig, Zirildeler, and Photon in the clock tower of Hadleigh. It was mentioned that Zirildeler was continuing his research.