None of them prove to be hard(er) than the others when I'm playing 1P. I can usually brush through the game with ease.

The CPU never gives me much problems. Against human players, I have trouble against good Kung Lao and Hsu Hao players, no matter which character I'm using.

White_Pointer

Mavado and Sonya sometimes, and Mavado blockes every hit aswell.

Since I am now playing on the Max level (yes, slowly progressing) , I found that Li Mei was the most frustrating, since I never really use her so I don't know what her combos really are. But she loves to use one that goes into her Sai weapon which just smacks me to the floor.

Oddly enough, Cyrax and Kitana often give me trouble, which is strange considering they are considered the weakest characters on most tier lists.

I would have to say:

Kano and Hsu Hao.
They always seem to turn psycho on you at times, lol, abusing reversals (then again, that is very common with those who have them at times).

Hsu Hao probably more than Kano, with that whole low throw thing.

But now I just don't have any problems with any of them, it really is too easy *shrugs*.

Kano, Hsu Hao, and Moloch.

Max Reptile when I'm Kitana

Hsu Hao! Always forget he flips you at the end of his combo... and his reversal!

Bo Rai Cho

Mostly,shang tsung sometimes.It depends which charcter im using.when i use scorpion everybody is easy.

im surprised no one has mentioned this guy... damn quan chi..... he starts a combo at any time and finishes cuttin your ass up with his swords... also shang tsung... he throws the first round.... second round is tough and if you go three rounds, he's gettin in that ass!!

Toughest Villain is Shao Kahn. But the toughest overall fighter is Rayden

Sonya, Quan Chi and Mavado are a pain on the ass. These trhee are very difficult on MAX. Mavado keeps using his God dam powerfull weapons, Sonya fights in TKD like no one can in other styles, and Quan Chi is difficult when he blocks.

No one character gives me a lot of trouble, but I do find Nitara to be a pain to fight... I think they should of made Shang Tsung and Quan Chi harder though on max, I think they are way too easier... In fact they are probably the easiest 2 to beat on max

I don't find any of the characters hard anymore but every once in a while i get screwed by them. Nitara after a power up can really mess you up if you're not careful. Reptile at times can get pretty sneeky. Raiden when he pulls out his staff can get annoying and as I mentioned in the weapon thread Quan Chi and his stupid swords always fuck me up cause I'm used to dodging everything and not having to block and that doesn't work to well vs him in weapon stance.

Sonya and Drahmin