Which toy story characters are only available at disney world?

The only source provided confirms that Toy Story is a Disney and Pixar franchise and lists its characters, but it does not mention any exclusive character availability at Disney World. Without additional evidence indicating that specific Toy Story characters can only be found or purchased at Disney World, we cannot assert that such exclusivity exists. Therefore, based on the current verified information, no Toy Story characters are known to be limited to Disney World only.