Drixenol "Drix" Koldreliff, commonly known as Drix, is the deuteragonist of the animated segment of the film Osmosis Jones. A cold-supressant pill with the taste of fruity flavor tasked in eliminating viruses, Drix serves as the main enforcer and partner of Osmosis Jones, assisting the bloody cell on his goal to save Frank Detorre's body from the deadly virus Thrax, eventually defeating him and saving Frank's life.
In the events of Heroes vs. Villains, Drix is as an alien enforcer rather than pill itself. He appears as an agent of the Galactic Federation, defending the galaxy from the forces of the evil.