Aldebaran serpent

The Aldebaran serpent is a reptilian lifeform native to the Aldebaran system. It has three semi-transparent cobra-like heads extending from a brilliantly glowing sphere hovering above the ground, surrounded by lights. Q briefly assumed the form of an Aldebaran serpent when he was introducing himself on his second visit to the USS Enterprise (NCC-1701-D) in 2364. 

Aldebaranische Schlange