I hope this guide helps you on your search for the characters. I should mention that ALL locations are the same as the Summer Character event, so if you already know where they are, Enjoy!, If not this guide can help you. I can confirm that the locations are the same on EVERY server. ANY character can spawn at ANY of the following locations.

Location 1 is behind the Arcade reached by the alley between the Arcade and Games Building.

Location 2 is located along the Boardwalk, in front of the Ferris Wheel, and along the fishing rail.

Location 3 can be found at the base of the Tower, alongside of the Theatre and in front of Toy Stop.

Location 4 is to the left of the Center Fountain, in front of the Laser Tag and Casino Buildings.

Location 5 is located on the Boardwalk to the side of the Hot Dog Stand, in front of the fishing area and just behind the Backer Bricks.

Location 6 can be found at the very Top of the Plaza Tower, facing the Center Fountain, and directly in front of Project 12.

Location 7 is at the base of the Plaza Tower, to the left of the Bowling Alley (if you are facing it) and off to the side of Central Circuit.

Location 8 is located on the boating pier, directly behind the Ferris Wheel, in front of Gone Fishin' and the Poseidon roller coaster.

Thanks again for viewing this guide, if it was of any use please show your thanks by rating it. I look forward to hearing your opinions/knowledge/info and if you ever catch me in game feel free to say "Hi!". I wish you all the best, thank you and GAME ON! XD