Imagination Nexus

The Imagination Nexus is a source of pure imagination, the energy that powers the LEGO Universe. It is located in Nexus Tower, the base of operations for the Nexus Force. It is extremely important, both as a source of energy and as a beacon of hope and creativity for the Universe.

Pre-corruption
The Imagination Nexus was found on Planet Crux around 0 AC. It eminated from the core of the planet, and was found to be able to bring any idea to life with its raw creative energy. Unfortunately, Baron Typhonus used it to bring an evil idea to life. This resulted in the Nexus being corrupted and turned into Maelstrom. The resulting explosion ripped Crux into many smaller world chunks, resulting in the universe that exists today.

Post-corruption
Fortunately, after the Nexus was corrupted, a small piece of it was found to still exist in a creation that had been brought to life earlier. The remaining uncorrupted piece was moved to Nexus Tower, where it was guarded from the Maelstrom at all costs by the Nexus Force.

Events of TROA/TFJ
In Snowbot336's story The Rise of Aredross (later the title was changed to The Final Journey), the Imagination Nexus starts to fade some 50 years after the end of the Maelstrom war. There are attemtps to rejuvinate it with deactivated Maelstrom, but this does little, if anything, to help. With the story still being written, the future of the Nexus is unknown.