Universe
Marvel Universe

Real Name
Sidney Green

Aliases
None

Identity
Secret

Citizenship
United States of America

Place of Birth
New Jersey

First Appearance
X-Men #171 (2005)

Origin
X-Men: The 198 Files (2006)

Growing up in a number of orphanages and foster homes in New Jersey, Sidney Green was a boorish, clumsy child, often the target of cruel bullying, by children and adults alike. Also an inveterate bed-wetter, Green carried around with him the funk of uncleanliness, which further ostracized him and made him miserable. Green's attempts to curb his nightly emissions by avoiding liquids led to dizziness and dehydration. Once his mutation manifested, a blissful drought beneath the waist set in, and there was a lack of sodden sheets. As a student at the Xavier Institute, Green had regained some confidence, forwarding audacious advances to aesthetically stirring female student Foxx. When Foxx was exposed as Mystique, Green sensed betrayal and attacked her. Within days, Green was able to walk again. Yet, the experience of being smashed in the head with a flush-lavatory triggered unfortunate memories of his childhood, perhaps permanently traumatizing him.

Recently, Onyxx was killed by Wither's death touch, while he saving Dust.