Nimbus is a cloud that Goku flys around on when he's on earth. It was a gift to him from the turtle at Master Roshi's. The turtle gave it to him bacause he was in the middle og no where and Goku offered to take the turtle back to the sea. The turtle had been looking for the sea for about 10 years after getting lost in a race against a hair. After Goku brought the turlte back to the sea he gave goku Nimbus as a thank you gift.
The Dragon Balls
The dragon balls are the most inportant items in the entire seiries. They often save the day. They're inmportant to Goku bacause when he died on earth Master Roksi used them to wish Goku back to life.
The Power Poll
I'm not really sure how Goku gets the power poll yet but I will find out. I believe it was gift just like Nimbus was. All I know is Goku uses this alot in Dragon Ball and in a lot of the Movies too.
