Costume Kingdom

This quest will become available after you’ve completed the first Apex (see The journey Begin's). Noah is located on the right side of town, just next to an intersection:

Interact with him and he'll give you a quest to catch him an Owly Hallowmon. Go up the street that Noah's on and after two houses on the right, will be a small opening with a large yellow glowing portal which leads to Platform Planet.

Just to the left of the Portal is the Owly. Interact with it and you'll start a battle. Defeat the Owly to "collect" it. Return to Noah to give him the Owly. This will complete the Quest and the trophy will unlock.