All thing mucus are the domain of Sam DeWitt, aka Sneezy. Chronically ill as a child, Sam’s mutant powers manifested at puberty. Now literally snotty and coughing, Sam’s body produced copius amounts of fluid, which he learned to control to a certain degree. He could fling various amounts of it around, to different effects, from covering a person’s face to blind them to infecting them with a super flu bug.
Sneezy was killed by Lightning Bolt in Issue 24.
Sam had two children, Samantha and Doris.
Excuse Me While I Kill This Guy