The Backyardigans can all manipulate time-space at their will which makes all of them extremely strong, however if we consider their actual individual characteristics all of them are a reduced size of the actual animal (or actual pup size) except for Palo and Uniqua, Pablo being an actual size penguin, but Uniqua being a huge ant which means she can lift 50 times her size thus stronger than the other Backyardigans and can also communicate with other ants which out number any other vertebrate animal by a huge amount, giving Uniqua the title of the most powerful Backyardigan.