Hydro Man totally knows what to do with super powers in panel #4.
During the Namor fight last issue, aboard a ship, one of the sailors is knocked into the water with some chemicals. Turns out, he became Hydro Man. And he’s all upset about being turned into a water being, so he attacks Spider-Man for his role in the accident that transformed him, and Spider-Man punches him really hard and evaporates him.
Nice little villain-origin issue.
Creators: Denny O’Neil and John Romita Jr.