Professor: There are other weapons I haven't given you as yet. For success it's essential you have thunderball fists.
Rayma: I can have such a thing?
Professor: That's right, thunderball fists!
Princess Dragon Mom: Greetings to you, Earthlings, I am Princess Dragon Mom. I have taken over this planet, now I own the Earth and you'll be my slaves for all eternity.
Professor: No matter how potent your weapons are, you'll be defeated because Infra-Man is invincible against them!
Professor: ...It would be foolish to fight Princess Dragon Mom with military power; that would lead to defeat. Therefore, another way must be found, and it's up to us to find that way.