Some beings like to make an entrance. Beyond that there’s little I can say that won’t spoil too much. So instead, let me provide some perspective.
The Other Realm isn’t just the domain of the gods. Many creatures make their home in that place, some powerful, but others natural byproducts of the magical energy that composes it. The Other Realm is a place of magic, both mundane and divine. It’s also a place where nothing is permanent because time doesn’t follow the rule set it follows in the physical plane. Things that happened after the present may have already happened in the other realm, sometimes more than once. At any rate, when a door from the Other Realm is opened, this is very much the kind of thing you’d see.