Where is your God now?
For me, a Gothitelle was something very scary.
Gothitelle, it even has its own slasher-flick like cry. Also it has shimigami eyes.
I havent seen anyone mention this one so I will, Mismagius!! its so weird looking, not so threatening but i wouldnt like to see it in a dark ally. But who fits the title for threatening/frightning are; Gyarados, Tyranitar, Aggron, Salamence, Gengar, Drapion, Nidoking, Houndoom, Ursaring, Sableye, Dusknoir and Chandelure!
I would have agreed that all Ghosts are frightening a couple of years ago but then came Gen V. And I found a pair of Ghost types who won't kill you. One's too cute to be frightening (Golett) and the other has no real interest in harming anyone (Golurk). Now granted, Golurk is a bit intimidating because of his size but the big fella wouldn't actually hurt you. I don't mind those two Ghosties; they're more than welcome on my team.
Now Gengar on the other hand.... :eek:
Without joking I think Voltorb is scary, I dont know why but if you mistake it for a pokeball, your screwed..
Masquerain- it gets Intimidate ;). Rare Candy Treatment
Genuinely, in the day I would say Garchomp (Damn that thing is manly) and in the night Darkrai (Sweet dream children).
I think Hypno deserves a mention here especially with it having a strange resemblance to the pied piper.
In all honesty, I've always found Houndoom to be the most frightening Pokemon. I have a thing about burns, and (according to the Pokedex) "if you are burned by the flames it shoots from its mouth, the pain will never go away." So, yeah. Supernatural burns that will never end. And probably drive you insane.
we're talking glitchy glitchy goo here!
The fake Groudon. That thing is the most frightening Pokemon ever (if it IS a Pokemon).
Banette. Pokemon version of Chucky.