Akira Fruit
Pros:
- Ability to destroy the world
Cons:
- You may die in the process
PS. I bet you all knew this was coming
Meter Fruit
Pros:
- Stretch/reduce your height at your own free will
- Basically the same as the Kilo Fruit, but with height
Cons:
- Well... you don't want to hit your forehead in a tower, for instance.
And
wnkryo-san, you're talking about Miss Valentine. She's Mr.5's partner, and she ate the Kilo Fruit. She can reduce/gain wight at her own will.