'''Leonardo di Ser Piero da Vinci''' (can we call him Leo?) was an Italian scientist, mathematician, engineer, inventor, anatomist, painter, sculptor, architect, botanist, musician and writer. Born in 1452 in Vinci, Italy (hence da Vinci, i.e. from Vinci). Leonardo apprenticed at the art studio of Verrocchio. According to one legend, when Leonardo and Verrocchio collaborated on a painting, Verrocchio found himself so outclassed by his apprentice that he abandoned art altogether.

Leonardo spent time in Florence (where he got charged with sodomy, sparking centuries of speculation over whether or not he was gay [[note]] We can never know because of the passage of time. On the one hand, Da Vinci was a man known to be outside the mainstream of society, and Florence was place of general tolerance.[[/note]]), Milan and Rome, working for various wealthy patrons. He produced some of the most famous paintings history: ''The Last Supper'', ''Virgin of the Rocks'', and, most famous of all, ''Mona'' "what-is-she-smiling-at" ''Lisa'', considered to be either the most beautiful or the most kitschy work of art in history.

Besides above-ground art, Leonardo also trafficked in the shady world of anatomy, secretly procuring corpses and dissecting them (an act which could get you killed at the time) to study the human body.

Leonardo always considered himself foremost a scientist. The areas of his interest include: aeronautics, anatomy, astronomy, botany, civil engineering, chemistry, geology, geometry, hydrodynamics, mathematics, mechanical engineering, optics, physics, pyrotechnics and zoology (allowing him to put pretty much every OmnidisciplinaryScientist in fiction to shame). His inventions range from the mundane (strut bridges, automated thread-winder, pulley systems) to the height of--for the times--science fiction, including tanks, airplanes, helicopters, and a mechanism for walking on water. Leonardo's awesomeness is such that he even gets his own genre of science fiction--ClockPunk.

In fact, it is his interest and expertise in so many areas which [[TropeCodifier inspired]] the term "RenaissanceMan". Unfortunately, though, he was interested in so many things that he couldn't [[AttentionDeficitCreatorDisorder settle down to work on anything]]. Many of his artworks and engineering projects never got off the drawing board, or, in the artwork's case, the doodlepad.

Leo died in 1519. He ''probably'' was not an [[Franchise/StarTrek immortal]] [[WesternAnimation/{{Futurama}} alien]]... or [[Series/DoctorWho friends with a Time Lord]]... or [[TheDaVinciCode a sacred feminine worshiping cryptologist]]... or an [[VideoGame/AssassinsCreedII ally of an order of assassins]]. And he was ''definitely'' not a [[Franchise/TeenageMutantNinjaTurtles ninja turtle]]. Or an ancestor of [[FamilyGuy Stewie Griffin]]. And we're decently sure he never [[Series/DavincisDemons traveled to South America in search of a magical book of knowledge.]]

Also note that people called him Leonardo (not da Vinci) back then. Da Vinci means "of Vinci", so it would be somewhat like saying "What would [[{{Jesus}} Of Nazareth]] do?"