The Champions (1968–1969)
Craig Stirling, Sharron Macready and Richard Barrett were agents for Nemesis, an international intelligence organization based in Geneva. Their first mission as a team was to investigate some lethal experiments in Communist China, but while escaping, their plane was damaged. They crashed into a remote part of the Himalayas where they were rescued by members an unknown civilization. They came away from the encounter with superhuman powers--telepathy, superior strength, memory, etc. The full series is here.