1. Goku: "Because I just like it! I want to improve myself and get better to pass my limits. I may even get a bit anti-social to want to improve..."

2. Vegeta: "I must do it because it's in my blood. It is my destiny to be the best! Anyone who thinks differently can settle this now..."

3. Gohan: "I only do so when it's for a good cause, or when I have to. Otherwise, I'm just as happy doing something else!"

4. Piccolo: "I used to want to be better than everyone else, but now I just do it for my own personal growth and to help my allies."

5. Goten: "It used to be fun back in the day, and I was very talented at it, but now I'd rather just do other things..." OR 6. (Chibi) Trunks: "I used to do it for fun too, and because I admired my parent(s) doing it, but now, it's just casual.

7. (Mirai) Trunks: "I want to use my skills to change the world for the better. It can't end like this! I will bring peace to the world."

8. Kuririn (Krillin): "I used to do it to want to impress other people, but now it's just when it's necessary... It's hard keeping up with you guys!" OR 9. Yamcha: "I used to do it to get things from other people, but now that part has passed..."

10. Tenshinhan: "My skills may not change the world, but at least I can do my small part in helping. It also keeps me centered."

11. Muten Roshi: "I used to be the greatest in the world (in my eyes), but now so many people have passed ahead of me... I just teach others casually now."

12. Mr. Satan: "YEAH! I'm the best, and anyone who thinks differently can just challenge me right now! Bwahaha! Unless... you know... you actually ARE all that talented. Then let's just keep this between us, okay?"