Bob-Omb Buddy Location - Rainbow Ride

Navigate to the area with the giant red coin maze in the Rainbow Ride level.

Do not enter the maze; instead, stand on the platform next to it.

Move to the left side of the giant red coin maze.

Locate a blue coin switch and a spinning heart on the ground.

Hit the blue coin switch; a single blue coin will appear against the wall. Note its position as a reference.

Position yourself at the reference point of the blue coin.

Perform multiple wall kicks (approximately 6 in a row) against the wall to reach the top of the red coin maze. To perform a wall kick, press A as soon as you jump into a wall to kick off it and gain height.

Once on top of the red coin maze, walk slightly to the right.

You will find the pink Bob-Omb buddy.

Talk to the pink Bob-Omb buddy to activate the cannon located on the ship.