hit him in the back of the head with goombas
You have to complete the world five castle as mini mario.
By canon or moon jump with action replay ds
on top of the castle
fly
farty
probably final bowsers castle
stand in the circle in the middle of the castle floor and press x then control you sight with up and down arrows.
To get on the castle roof of the castle
you need to get the key from bowser in the basement
You can't.
The courtyard is the outdoor area at the back of the castle with the Boos in it.
To unlock them you after collecting 12 stars look up in the castle circle and activate the red switch to unlock all ? blocks.