Ice Queen

The Ice Queen seems to be the final boss of the Frost Moon event. Not much research has been done about her, but she does have a chance of dropping a Snowman Launcher, a direct upgrade of Rocket Launchers or a Blizzard Staff. She also seems to be the Frost Moon equivalent of Pumpking.

Feel free to edit this. I have done no research about the Ice Queen, because I haven't gotten that far into the event!