'Penny' looks identical to Snow (Suno in the English Dub) from the RR saga in the DB series.
Goku: How come you're such a coward all of a sudden?
Oolong: What do you mean all of a sudden? I've been a coward all of my life!
(Bulma turns on the TV.)
Goku: But there's a man in there and I think he's being tortured!
(Bulma turns on the lights.)
Goku: Woah, you just made it bright but it's still dark outside!
Bulma: Chill out kid. It's a little something called electricity.
Bulma: That must be them!
Goku: That big bird took it?
Bulma: Boy, you really are a brick aren't you little guy? That's not a bird, that's a royal rocket fighter!
This episode aired between episodes 43 and 44.
Original Airdate: December 20th, 1986
AKA: The Legend of Shenron
This movie is included in 'The Saga of Goku' set which also contains the Pilaf Saga (first 13 episodes of Dragon Ball).
This is the first true debut of Goku and friends. This movie was made before the whole Dragonball craze was begun. Dragonball the series, is a spin-off from this movie. Except during the pilot episode of Dragonball, Goku meets his friends for the first time all over again, and there is a different plot.
A character not in the show named Penny is in this movie.