Time brain

The Giant Brain was a pawn of the Rani. Created by the Rani, this giganitic brain was an organic recepticle for the combined minds of time and space's greatest geniuses. Thus collected their combined inteligences were able to provide the calculations needed by the Rani to carry out her evil plan to create a time manipulator and endow her with god-like powers. (DW: Time and the Rani)