Dragon Ball & Superman, Toriyama copiò Siegel e Shuster

Su alcuni siti comunque è riportato che Toriyama ha ammesso di essersi ispirato a superman per alcune idee del suo manga.

questo da wikipedia:
"Akira Toriyama has admitted he drew much inspiration from Superman"

la pagina da cui è tratto è questa:http://en.wikipedia.org/wiki/Superman_in_other_media

Japanese manga artist Akira Toriyama parodied Superman in his first series Dr. Slump, in the form of "Suppaman" (slightly different from Supaman, the way that Superman is written in Japanese katakana), a short, fat, pompous buffoon who transforms into a Superman-like costume by eating a sour (or "suppai" in Japanese) pickled ume fruit (umeboshi). Unlike Superman, Suppaman can't fly, and instead pretends to fly by lying belly down on a skateboard and scooting through the streets.The Dr. Slump characters appeared in an episode of Dragon Ball where in the english dubbed version, Suppaman was renamed "Sourman". Some fans feel aspects of Son Goku were also inspired by Superman. Akira Toriyama has admitted he drew much inspiration from Superman.