An enormous humanoid with webbed feet and glowing red eyes, Ithaqua frequently stalks the Arctic wildernesses where he preys on the unwary. Regarded as having been the inspiration behind the legends of both the Wendigo and the Yeti, many of those who dwell in Ithaqua's hunting grounds leave regular sacrifices to this fearsome creature- not as acts of obeisance, but rather in an effort to appease the beast.
Any whom he does catch is dragged off to Ithaqua's true home, the ice planet of Borea, to swell his growing band of worshipers. Here, he will attempt to mate with any females in an effort to create children whose abilities will outstrip his own. He hopes that one day, one of these children will aid him in his goal of freeing the other Great Old Ones and, ultimately, in destroying the Elder Gods once and for all. However, in all the many years of his existence, none of these children has ever lived up to his dreams, and every one has turned on their father.
In addition to his cult on Borea, Ithaqua employs the services of the Shantaks, a dragonoid race who reside in the Dreamlands, and formerly the race of subhuman cannibals known as the Gnophkeh, before their demise during an ice age brought on by Ithaqua and Aphoom-Zhah.
Ithaqua was also responsible for the destruction of a Swedish army during the incident known as the Carolean Death March.