G-Force was a later edited version of the same original source material - Science Ninja Team Gatchaman. I believe it was made for the Turner Network in the US; it didn't have 7-Zark-7 and was less heavily edited but was still not unscathed - two of the male leads suffered the indiginity of being called "Dirk Daring" and "Ace Goodheart"!If you can, its worth tracking down the Region 1 Rhino release of Battle of the Planets, which has the corresponding Gatchaman episodes as extras. Its quite an eye-opener to the differences that were made!
"The power of bakers, the power of artists; even the power of witches! It must be a power given by God... sometimes we suffer for it."- Ursula, Kikis Delivery Service.