Cerean

The Cereans were a species of sentient humanoids. They were distinguished by their enlarged conical cranium that contained a binary brain. The Jedi Master Ki-Adi-Mundi, who sat on the Jedi Council during the waning years of the Galactic Republic, was a Cerean male.

Biology and appearance
The complex brain inside Cereans' cone-shaped heads relied on blood pumped from their two hearts.

Non-canon appearances

 * William Shakespeare's The Phantom of Menace: Star Wars Part the First
 * LEGO Star Wars: The Force Awakens