Leonardo da Vinci

You can't see me!

_{This character has no official visual representation in any Transformers product or media... yet, at least.}

Leonardo da Vinci is a well-known person.

Fiction

Destro noted that Doctor Mindbender could've used his genius to bring back well-renown people like da Vinci, instead of making Serpentor. Realignments

Leonardo da Vinci was a member of the Order of the Witwiccans, a group of humans who knew of the presence of Transformers on Earth and worked to keep their secret. Presumably, he shared a history with at least one Cybertronian, who took after his various inventions. The Last Knight

While visiting a museum, Wedge imitated da Vinci's Mona Lisa painting to hide from a passing human. Fright at the Museum

Your history lesson of the day: similar to Galileo Galilei and Dante Alighieri, Leonardo of Vinci, Florence did not actually live in a society that employed surnames. The modern appellation "Leonardo da Vinci" is like saying "Legolas of the Woodland Realm" in The Lord of the Rings films.