Francesco Bernoulli can tow objects and other players and cars. Using his skill tree you can make load outs more powerful, give machine guns more ammo, make him jump higher, let him charge his turbo boost quicker, and do faster air tricks.
Strangely, a lot of his quotes are omitted in Disney Infinity 2.0. This is partly fixed in Disney Infinity 3.0, in which the quote "Now I look down on you from above." is still missing. Also, the subtitles strangely do not show Francesco's quotes.