Gadgeteer Genius

It doesn't matter if they're 7 years old or 700, they're the greatest scientific genius in the universe and can prove it by building a 50,000-horsepower battle robot out of tin cans and an old transistor radio. Overnight. Sometimes their creations fail with entertaining explosions, but they always work for at least a little while. In Anime, the Gadgeteer Genius is usually female, and often still in grade school. In Western depictions the gadgeteer is usually male and can be of any age. Either way, any morality applies, as sometimes does MacGyvering. They often live in a Gadgeteer's House. There can be a very fine line between Gadgeteer Genius and Mad Scientist (or Bungling Inventor), when there is a line at all. As with The Engineer (who may also be this), they are disproportionately likely to be a Southern-Fried Genius in American stories, while one from the UK and Commonwealth is more likely to be either a Scot or a New Zealander. A Wrench Wench is a slightly more realistic depiction. Expect her Battle Cry to be "For Science!". A Tech Bro is a more-extroverted version of this, focusing on pride show-off and self-confidence. When the Gadgeteer Genius's creations cannot be replicated by lesser minds, see The Spark of Genius. When the results are impossible according to internal logic and Played for Laughs, it's Impossible Genius.