The Villain: Galactor Leader
Berg Katse
Katse spends most of the series making the Gatchaman team crazy over what lies behind his mask...or is it her mask? Three-quarters of the way through Gatchaman I, Ken tears the costume away, but all the team see before Sosai X intervenes is a mane of blond hair.
In the same pivotal episode (#88), we learn that Katse attended two different universities...but a professor at one says Katse was female, while a professor at the other insists that Katse was male.
Seeing the name Katse written on photographs of Galactor Onna Taicho (the Female Captain for Galactor) brings the team to the stunning conclusion that Katse just may be female, despite the hard, muscular body.
As Nambu discovers through his research, Katse is in fact a mutant, capable in adulthood of choosing either male or female form. He is a single entity created from fraternal twins by Sosai X, and, although he seems to experience fluctuations intelligence-wise, his true IQ is 280 (the combined IQs of the twins X merged.) He also seems to be able to survive things that would kill most people, though part of this may be due to Sosai X's intervention.
Katse's illusions sometimes seem to extend to something akin to magic; for example, in one episode, although Joe is holding a scythe to his throat, his clothes collapse, and suddenly he is running up a flight of steps several yards away. (On the other hand, Ken pulls this trick in another episode, vanishing out of a bullet-ridden Galactor uniform to reappear above his enemies.)
When Katse is finally, truly unmasked, he rises to his feet simultaneously speaking in both a man's and a woman's voices, but his appearance is definitively female, complete with that aforementioned mane of blond hair.
Katse's mask may have been intended to be reminiscent of a cat. His name means something along the lines of "mountain cat" and, if one follows the metaphor, one recalls that cats chase birds, and often make fools of themselves in the process. Nonetheless, Katse is most people's favorite villain. He is often sly and graceful, and even in his worst moments, though surely he would deny it, terribly human.
Voices:
Gatchaman - Terashima Mikio94 OAVs - Shiozawa Kaneto
BotP - Keye Luke
G-Force - Bill Capizzi