Single post in 12 Days of Christmas!

I understand that it says that you need all 12 in order to find him, but I do not really understand that too well. Hod do you know that Looker will be on a page, when you find him. I understand that it is kind of random, but I do not understand that part too well. Looker will be a Ditto. Thank you for that information. I really appreciate it.