[Classic Trope] The mad scientist

* Dr. Emmet Brown (Back to the Future)
* The eccentric scientist who cracked the secret to time travel



* The Medic (TF2)
* A psychotic doctor who's healing abilities are incredible but mentally is likely not all there



* Micheal Reeves (Real Life)
* Youtuber who makes all sorts of gizmos and gadgets (How has he not died from an electric shock)