Arden Hayes. Remember that name, because more than likely he's going to be a President or a Nobel Prize winning scientist in about 20 years.
The five-year-old returned to Jimmy Kimmel (having last time shown up knowing everything there was to know about American presidents) showing off his new geography knowledge. And we're not talking 'clouds make rain' knowledge, but knowing every single country on the planet and their capitals, as well as where they are and how to pronounce them.
This should really be unnerving (as he's clearly a superhero/villain waiting to bloom) but he's actually just the most adorable brainbox on the planet so we can't help but love him. Which is probably part of his evil mastermind plan. Reel us in with the cute, and then crush us with the genius.