There will be three Octoplush: Aquapup Edition plushes from Flat Bonnie x Nathan Hamill given away at the 3DRetro San Diego Comic Con Booth #5049.
In order to win one, you'll need to purchase an Octopup: Octocrush Edition Sofubi for $10.00 at the booth. If you receive an aqua "golden" ticket, present it and receive your free Plush Pup.
That plush stands 6" tall and is made with soft fleece and vinyl pleather.