Nope. Bob Remus was wrestling with the name and gimmick in the early 70s before he signed with WWF or Hasbro so the name and gimmick belong to him. It's up to the contract whether the licensing is exclusive and/or very specific for the whatever time a particular contract covers. Contracts could be drawn up in such a way that the "Sgt. Slaughter" character could be part of the WWE line (which should also allow for a MOTWWEU figure -- he is currently with the WWE Ambassador program), Valaverse and the rumored G.I. Joe Classified line all at the same time.