Onyxx (Sidney Green) is a fictional mutant appearing in comic books published by Marvel Comics. He first appeared in X-Men, vol. 2 #171 (August 2005), and was created by Peter Milligan and Salvador Larroca.

Onyxx
Publication information
PublisherMarvel Comics
First appearanceX-Men, vol. 2 #171 (August 2005)
Created byPeter Milligan (writer)
Salvador Larroca (artist)
In-story information
Full nameSidney Green
SpeciesHuman Mutant
Team affiliationsChevaliers training squad[broken anchor]
Xavier Institute
X-Men-In-Training
AbilitiesSuperhuman strength and durability

Fictional character biography

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As a child, Sidney Green lived in various foster homes and orphanages, unable to find acceptance because of his crude behavior and chronic bedwetting.[1] This was cured after his mutant abilities activated, transforming him into a four-eyed golem-like creature.

Subsequently, Sidney becomes a student at the Xavier Institute as Onyxx and joins Gambit's training squad, the Chevaliers.[2] He develops a crush on fellow student Foxx, who is later revealed to be a disguised Mystique.[3]

Sidney is one of 198 mutants who retain their powers after the Scarlet Witch depowers most mutants on M-Day.[4][5][6][7] He is later killed by Wither before being resurrected after the establishment of Krakoa.[8][9]

Powers and abilities

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Onyxx has a craggy granite body, which gives him superhuman strength and durability. He also possesses an additional pair of eyes, but it is unknown if these serve any special purpose.

References

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  1. ^ 198 Files
  2. ^ Official Handbook of the Marvel Universe A to Z, vol. 13 (2010)
  3. ^ New X-Men, vol. 2 #35
  4. ^ New X-Men, vol. 2 #38
  5. ^ X-Men: Manifest Destiny #3
  6. ^ Dark Avengers / Uncanny X-Men: Utopia #1
  7. ^ X-Men: Legacy #226
  8. ^ X-Force, vol. 3 #23
  9. ^ X-Factor (vol. 4) #5 (February 2021)