After Dilbert creates the Blue Duck on an episode of the TV show Dilbert, Dilbert is kidnapped by this man.  
After Dilbert creates the Blue Duck on an episode of the TV show Dilbert, Dilbert is kidnapped by this man.  One version of this man is forced to lend his skills to Tau while being kept in a place he believe to be America.  Scaroth tries to make money off of this man's labor in the Doctor Who episode City of Death. This man  creates an alchemy forge that is sought after by Mayflower Industries in film Hudson Hawk. While living on  Holberg 917G he creates the android Rayna and goes by the name Flint. On Futurama, this inventor creates the  Macchina Magnifica in a plot to get revenge on the smarter members of his species. For 10 points, name this  Renaissance Man that drew sketches of flying machines.
After Dilbert creates the Blue Duck on an episode of the TV show Dilbert, Dilbert is kidnapped by this man.  
Leonardo da Vinci [accept either]