Brain Frog is the Hero Watch's DNA sample of a Galvan from the planet Galvan Prime. Brain Frog's design was created by Rapha LXIV.
Brain Frog is a grey-skinned, frog-like, bipedal alien that is only four inches tall with large blue eyes, which have rectangular pupils and horizontal eyelids. He now wears a blue suit with a black stripe on the middle, and a white X-like structure to sustain the Hero Watch symbol, alongside extended black and blue fingerless gloves. He also keeps his human purse.
Powers and Abilities
Brain Frog's small size belies his great calculative and technical intellect. He can create complicated machines from spare parts, understand the function of any device at a glance, and make sophisticated repairs to complex machines (such as a warp-drive engine). Brain Frog's intellect serves as a problem solver and analytical help in difficult situations. This allows Brain Frog to think more strategically when brute force is inefficient. In fact, Grey Matter was smart enough to know how to unlock the original Omnitrix's Master Control.
Brain Frog's brain capacity makes Ben smarter about things he's never even seen before, like Kraab's alien circuitry. Brain Frog can sometimes manipulate living things by stimulating certain parts of their nervous system if such beings can be controlled by external stimuli. Brain Frog's size allows him to squeeze into small spaces and can climb walls due to microscopic pads on his skin. He also has sharp teeth and his slimy skin makes him difficult to grab.
Brain Frog is amphibious and has gills. Brain Frog has a long prehensile tongue, owing to his insectivore nature. As a Galvan, he also possesses a 'pre-brain' which deals with all basic bodily functions.
Brain Frog's small size makes him unsuitable for physical battle, so he must outsmart his enemies in a fight. Animals like dogs and cats can be a problem, as they may see Brain Frog as a chew toy or food to them.
Despite possessing immense intelligence, Brain Frog can still make miscalculations. According to himself, Brain Frog sometimes does not know what he is talking about and he does not know everything, as seen when he did not know (at first) which galaxy his species is from.
Being a Galvan, Brain Frog would be vulnerable to his natural predator, the Omnivoracious, if the latter's species was not extinct.