Osmosians are a type of mutant human with unique abilities that vary from individual to individual. They have an insatiable hunger for matter and energy, and if they absorb too much, they can become mentally unstable or even go insane. Osmosians can use absorbed matter and energy to recover from injuries and increase their strength, which can vary depending on the material they have recently absorbed. They live for hundreds of years and develop flesh-colored horns on their foreheads as they mature. Osmosians can also absorb alien DNA, but they can only have 1/10 of that alien's power. If an Osmosian loses control of their mutations, they can become a fusion of all the DNA they have absorbed. In order to restore their sanity, they can forcibly drain their mutations, but this has risks to their physical health.