The Z'Nox have two pink eyes with black pupils, five fingers and toes, brown skin and average around 6'1" in height and averaging around 265 lbs. in weight.

Unable to challenge Skrulls in Andromeda galaxy (Official Handbook of the Marvel Universe #12, 1983); created Ultimate Weapon to transport entire planet throughout space to pillage & take slaves, existence detected by Xavier who had Changeling replace him to allow him to prepare counter-attack, scout ship arrived at south magnetic pole, X-Men battled guardian beast while Xavier united millions of compassionate minds & directed them at Z’nox which forced them to depart (X-Men #65, 1970); Beast, Crystal, Cyclops, Human Torch, Marvel Girl, Mr. Fantastic & Thing followed Z’nox planet in spaceship reverse-engineered from Skrull technology to prevent further plundering, vs second guardian beast, crosslinked interstitial field generators of gravity drive to cause sub-protonic flux emission that sent Z’nox world sideways into distortion area of Negative Zone (X-Men: The Hidden Years #8-9, 2000); Xavier mentioned that a Z’nox - apparently Kreeg - was member of Starblasters (Starblast #1, 1994); representatives attended gathering of Intergalactic Council (Maximum Security: Dangerous Planet #1, 2000); Sentry/Stewart Ward allied with Z’nox who survived scout ship explosion to steal vial of bio-toxin modified by rogue A.I.M. & Hydra agents, Ward intentionally infected by Z’nox with toxin which remained dormant in his system until arrival of three more Z’nox sent by Intergalactic Council as prisoners when Earth was turned into alien prison planet, bio-toxin consumed Ward & spread to atmosphere, Ward sought to turn Arthur Stacy into new host but was thwarted by Spider-Man & Ranger who caused Ward’s apparent death & created antidote from explosion of Ward’s body, Earthbound Z’nox apparently killed in explosion (Amazing Spider-Man #23-24, 2000)