A character, often an adult or sometimes teenager, has a considerably younger Sidekick. Traditionally the kid will often act as The Watson for the main character, and/or as someone for younger audiences to identify with. Sometimes the kid acts as a Morality Pet or as a Wish Fulfillment personification, which goes some way to explaining the implausibility of a responsible adult putting a young child in dangerous situations. Sometimes the sidekick will be a Teen Genius (or younger) in an attempt to justify their presence, or even a Cute Bruiser. Other times, they're The Load and a Damsel in Distress.