Marquox

Marquox was a mind flayer prisoner of the githyanki in Undermountain in the early 1490s DR.

History
Around the Year of Three Ships Sailing, 1492 DR Marquox's fellow mind flayers Tel'zact and Yeluit went inside the Crystal Labyrinth level and disappeared. So Marquox too went inside the Crystal Labyrinth but was captured by the githyanki and very unusual kept alive inside a cell.

Relashionship
Marquox was a member of the illithid colony inside Seadeeps Level with a good relashionship with Tel'zact and Yeluit.