He is an Azerai of the mists, in charge of rolling in the mists, receiving the mists, and masking secrets.
Appearance
Summary
He has an ornate, long ceremonial pipe radiating mist. He has a kilt above a rolling cloud, a halfcape across a lovely wide-brim sleeveless shirt that, if you get close enough, you swear you can hear the ghostly clattering of trinkets; odds & ends of unknown origin known only to him.Wild Locations & Summoning Rituals
Summary
He is reported to be found in any naturally formed mist. Summoning him requires replication of a physically steamy condition and a large enough container to trap it. Afterwards an incantation can be done.