He can be found in Haunted Towers. Once you find the Supercharge in the castle, charge down the first two doors until you're in a room with many rooms. Take the top right one, but instead of trying to charge up the ramp, turn left and jump onto the other side. Run up the ramp, and jump over to the 'secret' platform, and there will be a Whirlwind. This will take you to Copano.