Flat Bonnie will have an exclusive plush available at the Giant Robot booth (#1729) at San Diego Comic Con 2017. The Baby Unicorn in cosplay as WonderCorn will be available in limited numbers (Giant Robot will also have other Flatties available). The Baby Unicorn in cosplay as WonderCorn measures about 4.25 inches tall and is made of faux fur and vinyl pleather. You'll be able to pick one up at SDCC for $20.00 each.
