Hairo Anken (案件 灰色) was the high school prodigy who died after get hit by 1998 Suzuki Alto. After 10 years, he get reincarnated and resurrected as a Galvan.
Powers & Abilities
Hairo'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).
Hairo's intellect serves as a problem solver and analytical help in difficult situations. This allows him to think more strategically when brute force is inefficient. In fact, Hairo is smart enough to know how to unlock the original Omnitrix's Master Control.
Hairo's brain capacity makes Ben smarter about things he has never even seen before.
Hairo can sometimes manipulate living things by stimulating certain parts of their nervous system if such beings can be controlled by external stimuli.
Haio'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 that can cause pain to those he bites, as well as slimy skin that makes him difficult to grab.
Hairo was the weakest alien in the original series due to his minuscule size, but he compensates with his intellect and efficient technological and calculative skills.
Hairo's intelligence is not limited to technology and biology, as he is smart in general. Even if he does not know something, he can learn it very quickly.
Hairo appears to be stronger than he looks.
Hairo can breathe underwater due to having gills, making him amphibious.
Hairo 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.
Hairo was able to understand Pyxi's speech.
Hairo'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 him as a chew toy or food to them.
Despite possessing immense intelligence, Hairo can still make miscalculations.
According to himself, Hairo sometimes does not know what he is talking about.
Hairo does not know everything, as seen when he (initially) did not know which galaxy his species is from.
Being a Galvan, Hairo would be vulnerable to being trapped by a member of Omnivoracious's species if they were not extinct.
Hairo's name was an etymology: 案件 translated as Matter, and 灰色 translated as Grey.