Implacable.  Relentess.  Merciless.  Inescapable.  Preceded by thunderous footsteps that herald the approach of doom.  

Daimajin is one of the most terrifying monsters ever depicted on film, even if he is nominally the good guy.  Much of that is owed to the performance of former pro baseball player-turned-actor Chikara Hashimoto, whose eyes radiate pure malice.