This is the first movie with the "Dragonball Z" title on it. There were in fact some before this, but they had the original "Dragonball" series names on it. It's weird how this is actually shorter than some of the specials! I still consider it a feature length movie. If so, it might be the shortest one I've ever seen. It makes no sense with the show, even though it should with the filler of the Garlic Jr. saga. There's no reason why Krillin would be surprised Goku has a son in the first episode or why everyone is surprised when Gohan unleashes his power on Radditz as those things happened here.
With all that being said, I still enjoyed it, but wouldn't quite recommend it. The scenes where Gohan gets drunk is some of the funniest stuff the series has ever done! I love the idea of taking Emperor Pilaf's voice and giving it to a serious villain. I don't know if I ever realized that Ox King is Gohan's grandfather before. There's so many characters it's hard to keep up with how they're related! The animation is good too. ***
With all that being said, I still enjoyed it, but wouldn't quite recommend it. The scenes where Gohan gets drunk is some of the funniest stuff the series has ever done! I love the idea of taking Emperor Pilaf's voice and giving it to a serious villain. I don't know if I ever realized that Ox King is Gohan's grandfather before. There's so many characters it's hard to keep up with how they're related! The animation is good too. ***