7) Elongated Man
Ralph Dibny AKA Elongated Man might be most known for his super-stretching abilities, but he’s actually an adept investigator, as well. In fact, he’s generally considered to be one of the finest detectives in the whole DC universe. Sometimes he’s even said to be on the same level as Batman (though the pair differ greatly in their approaches and methods).
Back in the Silver Age, Dibny and his wife Sue were reimagined as a couple of amateur investigators who travelled the country looking for unusual cases, usually to do with metahumans. Unlike most comic book detectives who use their powers, fists or gadgets to solve crimes, Elongated Man would employ classic problem-solving and deduction in a way that allowed the readers to follow the mystery and work it out themselves.
It will be interesting to see whether The Flash‘s version of Elongated Man, as played by Hartley Sawyer, will explore this element of the character when he appears in a recurring capacity in season 4.