(The Higher United Nations Defense Enforcement Reserve.) Once a very active agency in the 60s, it was created to provide the UN with an auxiliary capable of dealing with super threats without being dependent on supers from member countries (as was the case with Vanguard), This organization has fallen on hard times fundingwise and now acts as a super-powered auxiliary for UNTIL. The only original super still affiliated is the seemingly immortal mind-transferring Noman. The Lightning suit has been retired as too dangerous for its user, but the Raven flying suit and Dynamo belt are still used. The Mentor helmet has been missing for years.
THUNDER keeps up contact with ISIS and sometimes loans operatives to that organization.