H2Olga is made up completely of light blue water, even her hair being a wavy blob of liquid. She wears a navy blue bikini and matching gloves and boots. She also wears goggles and a cape. Although she is a villain, she may not be a very powerful one since her main attack is shooting a small, low pressure stream of water. However, when given a large body of water to work with, she has the capability to control all of it and becomes a bigger threat.
H2Olga stars as the main villain in Crime Wave. She lures the Crimson Chin into a trap by pretending to be an innocent bystander crying for help. Initially, H2Olga wasn't much of a main threat, but when the comic book became immersed in the bathtub water, H2Olga was able to use the excess bath water to flood the town of Chincinnati in the book. She then proceeds to go destroy page 8, which was where all the staples holding the book together were. As the water nearly engulfed the entire city, the Crimson Chin, who was babysitting a small toddler at the time, comes up with a plan after seeing the toddler's diaper, which said the words "Super-absorbent." The superhero tricks her and zaps her arm off, she screams in pain. He then soaks up the water which causes her to shrink, she asks what's happening to her body. The hero then flies, punches her boob, and she becomes part of the diaper. While the girl describes how she'll get out, the baby poops on her body and bikini, causing her to scream in disgust and agony.