Board Thread:News and Announcements/@comment-25521424-20160607001253/@comment-26917787-20160607140733

From the set, the creature looks more like a literal representation of a squid than a demonic creature. But it is highly possible; the producers might have decided to give Strange a lesser known demon to fight before paving the way for the major threats like Dormammu and Satannish. Perhaps Mads Mikkelsen's character wishes to summon it, but Strange has to defeat/banish it.