You need to be DK and climb up the vines.
Save him from top of a building {you need donkeykong to climb vine}
in wario stadium
Save him from the top tower.
Mario Super Sluggers is better. You can use almost all Mario characters, including old ones from Superstar Baseball, and have day/night stadiums.
To the green koopa in Wario City
no you cant
The POW Ball.
DK can climb the plants on the building and smash the crates
in dk jungle (in the tresure chest that Wario can OPEN
You will need Donkey kong and Yoshi.
In Mario Super Sluggers, my best team is, Mario, Luigi, Yoshi, (Mario in middle outfield) Peach, Petey, (Peach pitcher & Petey catcher) Bowser, Baby Mario, Wario (Bowser first base, Baby Mario second Wario third) Bowser jr. (short stop). Those are my secrets.
turn into wario, and press a when ur near a treasure chest or a garbage can