The Good Guys

Monkeyboy Monkeyboy AKA: Son Gokuu
He's similar to Gokuu in his passion for fighting, good spirit, and nativity. He passionately loves his grandpa and would risk everything to save him. Although he differs from Gokuu in the fact that he's more arrogant, rash, and sometimes takes things a bit too seriously. He is the 91st descendant of the Monkey King, which makes him related to Piggy.
Ceeto Ceeto AKA: Bulma
She's got beauty and brains, just like Bulma. She even acts like her (too a certain extent). Unlike Bulma, she's more compassionate for others. Many of her scenes involve parodying famous scenes from Dragon Ball such as the showing Kamesennin her panties (although in the movie she gets Piggy to transform into her and show Turtleman "her" breast).
Piggy Piggy (The Pigheaded Wizard) AKA: Oolong
His first appearance is very much like Oolong's. He's in a mutated form chasing after a poor innocent girl. He tries to act tough but has no backing and is a coward. Of course he's a pervert just like Oolong. He is the 91st descendant of the Pig Fairy, which makes him related to Monkeyboy. Because of this he calls Monkeyboy brother.
Jade Jade AKA: Original Character
She's the princess of the attacked village, she left because she had no where to go and she didn't know what to do. After being saved from Piggy by Monkeyboy, she joins the crew to restore her village. Although she doesn't really do anything but tagalong and give emotionless facial expressions. Her biggest role in the story is her connection to the village.
Westwood Westwood AKA: Yamucha
He's very much like Yamucha and is one of the better portrayed characters. He's a little arrogant, insecure, and is afraid of women. So he shares the same wish as Yamucha: to not be afraid of girls. He is one of the supporting fighting characters.
Miss Snow White Miss Snow White AKA: Puar
I would have to say that Miss Snow White is nothing like Puar and is really annoying! The only resemblance of Puar, is that she is Westwood's side kick. Other than that she's a cocky cockatiel that won't shut up!
Turtleman Turtleman AKA: Kamesennin
Personally I think this character resembles the DB characters the best. He's a deprived (maybe a little too deprived) perverted old man, with amazing strength, wisdom, and also very silly. He also looks most like his character. However he's seems to be a little too silly to be Kamesennin, a little too deprived, and I'm sorry that dancing number is out.
??? Spark? Spock? Oldmonkey? AKA: Grandpa Gohan
He's Monkeyboy's grandpa and martial artist and yes in this movie he's alive. He seems more like a silly old man than the wise and tricky Grandpa Gohan of DB.