the historical figure was really an alien theme
The crackpot notion that some historical (or legendary) character from our history was really an alien in disguise, is put forth.
Examples
In futurama6x05 "The Duh-Vinci Code" we learn that Leonardo da Vinci was in fact a fantastically long lived extraterrestrial from the planet "Vinci", where he was the dumbest of his kind.
3 total · 2 major · 1 minor
| Story | Level | Motivation |
|---|---|---|
| futurama6x05 | major | It turned out that great polymath Leonardo da Vinci was really an alien. |
| tos2x07 | major | It turned out that Jack the Ripper was really the malevolent alien entity known as Redjac. |
| bbf2x21 | minor | We learn that Jack the Ripper was abducted by aliens and given perpetual life to atone for his sins. |