Professor Morovar (Star Spawn).
The professor lives in her house and almost never leaves it.
Her housekeepers are her primary point of contact with the outside world.
Most people think she's very ill.
She mainly communicates through letters.
Her goal is to open a corridor between the Far Realm and Neverwinter, passing though the Demiplane of Nightmares.
This would allow her Master to extend its influence and possibly over time move part of the Swordcoast into the Far Realms.
She spent a long time building her image as an esteemed professor specialized in the recovery and restoration of ancient magical artifacts.
She made contact with professor Demoyen 7 years ago and has developed a strong relation with him.
When she asked him to help her with a new artifact she recovered, he invited her to stay as a guest professor at the House of Knowledge.
This was 10 months ago.
The dreambuilder was transported from Mirabar over the river.
It took 9 months to assemble study it, and recreate the missing parts to get it working again.