stating the obvious, part 1955
io9 has a multi-hundred word screencap-illustrated post (tl;dr) on Why Doc Brown is the real villain of Back to the Future with the perfect lede:
The real monster in the Back To The Future movies isn't the bully Biff, argues Premiere's Gene Newman. It's Doc Brown, the lying manipulator who deals with terrorists and nearly destroys the space-time continuum. Spoilers ahead.