Rockhopper will be visiting throughout the Holiday Party this month with a brand new background! Although the official name isn’t yet known, an image has been shared showing the full background. It depicts the Migrator and the Northern Lights, along with a festively-dressed Rockhopper!
In order to receive this background, you’ll need to meet Rockhopper in-game. The tracker should help with that, and he’ll be visiting plenty of times until the party ends, so there should be many opportunities for everyone to meet him!
Good luck doing so!