Lacertes: Lacertes is the name that Sume-san gives his first form, a large western-style dragon which can put out surprising speed. Lacertes has a long, serpentine body, smooth scales and is surprisingly flexible despite its size. Besides its maneuverability, Lacertes also has high enough strength to crush concrete with its bare hands, and his bite is also particularly powerful. To finish the arsenal, Lacertes also has some short-ranged fire breath. Due to how well rounded it is, Lacertes is Sume-san's primary combat form to scout out the situation and see whether he needs to use anything more specialized. An interesting thing to note is that Lacertes, as well as the rest of his forms, don't really resemble the creatures native to the Crimson Sky. They tend to be rather physical with their attacks, whereas many creatures in the Crimson Sky use magic. Pound for pound, Lacertes can hold his own quite well, but some opponents are simply too much for him.

Desperadon: Bigger than Lacertes and much, much stronger; the Desperadon has a terrifying presence. Its bulk makes it far less maneuverable than Lacertes, and in fact it is actually quite clumsy. The Desperadon makes up for it by being able to crush most enemies underfoot. He also has some nasty teeth, and the ability to fire a laser from his mouth; but the laser is incredibly taxing on him so he can't do it too often. The Desperadon attracts a lot of attention as well so he doesn't want use it unless he really has to.

Xalos: His final, and strongest form. About the same size as Lacertes, Xalos is a quadrupedal creature, which looks like a mix between a dragon and a tiger. Its strength isn't as high as the Desperadon's, but it has the ability to generate and control electricity in the form of lightning. If he were to use his maximum output to produce a lightning strike, it would be able to blow a hole in a tank. Xalos does however generate ambient electricity completely independent of Sume's own will, making the form more draining just to be in. As long as he isn't engaged in combat, his stamina won't drain faster than he can replenish it by resting or eating, but extended combat in this form will likely leave him tired out after some time.