Smokeseer is a NightWing of unknown gender who is introduced in Darkness of Dragons. They were shown attacking the IceWings at Jade Mountain alongside Eclipse. Their names were mentioned when Moonwatcher tried to convince the NightWings to stop attacking.
Smokeseer was shown attacking Narwhal and Snowfall alongside Eclipse. They were mentioned by Moonwatcher and might have been the one to call her a traitor.
A typical NightWing (colored), by Joy Ang
A typical NightWing (lineart), by Joy Ang
A typical NightWing from the German publication, by Max Meinzold
NightWing Sigil by Platypus the SeaWing
Smokeseer by Solstice the Icewing
NightWing by TheMadSeanyCorny