Creator
Joe Staton, Steve Englehart
  
Dave Cockrum, Len Wein
  
In Comics
Tales of the Green Lantern Corps #1 - Challenge!
  
Giant-Size X-Men #1 - Deadly Genesis
  
Base
Oa, formerly Earth, Bolovax Vik
  
(current) Professor Charles Xaviers Institute for Higher Learning, Salem Center, Westchester County, New York (former) Muir Isle, Scotland,; a loft in Soho, Manhattan, Ust-Ordynski Collective, Lake Baikal, Siberia, U.S.S.R., X-Men Headquarters in Austra