Where are serial numbers typically located on toy story action figures?

The only verified information from the supplied sources is the existence of the Toy Story franchise and a separate entry about the television series Thunderbirds. Neither source discusses product details, packaging, or serial number placement for Toy Story action figures. As a result, there is no documented evidence to indicate where serial numbers are typically located on these figures. Without additional reliable references, it is not possible to provide a definitive answer regarding serial number placement.