The Negative Spirit’s natural form is a vague cloud of blue electricity-like energy referred to as Negative Energy. But since bonding with its host, Larry Trainor, the limited time it is able to be outside of its host’s body, it has taken its vague form and formed it to match his, giving it a vaguely humanoid form of jumbled blue electricity-like energy. It also often shows up as a circular blue glow in Larry’s chest. It spends most of its time inside of its host, who is severely burn-scarred due to the crash. Larry almost always wears white radiation-proof bandages, black sunglasses-like goggles, a military-green turtleneck, gray pants, black boots, belt and suspenders, and a long, brown coat with white fur lining on the inside and the lapels, the cuffs of his sleeves and collar, which are turned out.
Using the canonical special effects for it (and the actors of the character for its host, Matt Bomer as voice actor and faceclaim, Matthew Zuk as body claim within the bandages).