 He is the co-creator of such Marvel characters as Kitty Pryde/Shadowcat, Emma Frost, Sabretooth, Shadow King, Scott Lang, Bishop, Omega Red and Rachel Summers.Byrne was born in Walsall, Staffordshire, and raised in West Bromwich, also in Staffordshire,<ref></ref> where he lived with his parents, Frank and Nelsie, and his maternal grandmother.<ref>Byrne, John, "Superman