Brick Mesa was a pocket in Wonderland. It had similarities to, and was to an extent a predecessor of, Crux Prime.
In an early storyline of LEGO Universe, one of the initial explorers of Planet Crux, Prospero, somehow sacrificed himself to protect Wonderland from the Maelstrom, merging with the landscape in the process.[1] A Maelstrom rift formed nearby, held at bay by weaponry powered by Nimbus Coils in Prospero's hands and head.