Rex

Rex is an Omnidragon that once ruled over (in its own words) a "group of weak, nameless universes". Its subjectual universes were destroyed long ago by outside invaders, after which point it began freely roaming the Omniverse. It recieved Trine's distress call during the War of Conquest and arrived in Nullverse during the events of The Final Crusade: Devotion.

Appearance
As an Omnidragon, Rex is able to freely change its form at will. Its true, "standard" form is that of a swirling vortex of multicolored cosmic dust with no defined shape or size. Humans that lay eyes on it have described it as a floating ball of gas, not unlike Trine. It is capable of shaping itself into a humanoid appearance, which it does when conversing with those who do not already know of his true form.

Powers and Abilities
Omnimagic: As an Omnidragon, Rex has access to powerful magic capable of warping reality as he pleases. However, as it is one of the weaker Omnidragons, his powers can be overrided by a stronger entity. Generally speaking, any being derived from an Omnidragon stronger than Rex is also capable of overriding its powers. In Nullverse, the only entites that fit this category are Chromus, The Progenitor, and Trine. Anyone that has consumed the Life Fuel can also combat this ability, on a case-by-case basis. See this page on the power structure of the Omniverse for more details.