Ok, Dizzy, try to catch up with Lucario and destroy the window he didnt attack. After that, strike him hard.
Max, stay right in front of Starmie and unleash your Bug Buzz, with some luck, Starmie wont be able to get through you and your attack. Make it sleep to prevent Light Screen and then, hit it hard again.
ACTIVATE CONTRARY Spinda:
Run to window -> Return (Break it) -> Superpower (Lucario)
If paralised, push-back.
Butterfree:
Bug Buzz (Starmie, stay between Starmie and the window so it cant get there, spread the sound in order to make a ''sound wall'' to make sure the vibrations will stop Starmie) -> Sleep-Powder (Starmie) -> Bug Buzz (Starmie)