I don't know how or why, but Hollywood adaptions always manage to fuck the whole thing up even before getting to the goddamned plot.
It's like they know that thousands of jackasses will line up to see it anyway, and those hundreds who'll just go see it 'for kicks'.
One of the most aspects everyone knows of DB/Z is that Goku's best friend's name is Krillin. Krillin doesn't exist here. He's replaced by some Mexican named Teto.
Goku goes to school and gets bullied by some guy who's real name is Texas Battle.
He goes to school. It's like they aren't even paying attention. Goku's main personality is that he is an uneducated, naive kid with a heart of gold.
If I wanted to watch Peter Parker, I'd go turn on Spiderman.