Mortal Kombat II for Super Nintendo.
Information gathered from various sources and compiled here by Studio42
Most hints, cheats, tips and so forth came from Game Player Magazine, 
Vol. 7, #9, internet, alt.games.mk, and FAQ files
Reproduced without permission by Studio42 BBS:  (Hermes)

THIS IS NOT A FAQ FILE. This is merely a list of moves.

Key:
Any number: how many times to perform action indicated. 
    Example: 3 F would indicate press forward 3 times
U: up
D: Down
F: Forward
BA: Back
BL: Block
rel: release
sec: seconds
(): number of spaces to stand away from character
    Example: (2) would indicate stand 2 charater widths away from opponent.
1/4 circle BA: Quarter circle back: Down, Down/back, Back
1/4 circle F: Quarter Circle Forward: Down, Down/Forward. Forward
1/2 circle BA: half circle forward: Forward, Forward/down, down, down/back,
    back
1/2 circle F: half circle forward: back, back/down, down, down/forward, forward
[]: additional move instructions

We will include all moves for each character so this may serve as a quick
reference chart

SNES Key guide:
A: A key
B: B Key
X: X key
Y: Y key
BL: L or R key

SNES Basic Moves:
(This section provided by Log Wood Forest BBS: 916-331-2373, First Class)
(and reproduced without permission from the SNES Mortal Kombat II manual)
Yes, I know these are all in the manual, but remember, we are making a
reference chart here as well.

To move Forward or back:
Press the CONTROL PAD LEFT or RIGHT

To Block:
Press the L or R BUTTON

To Crouch:
Press the CONTROL PAD DOWN

To Jump:
Press the CONTROL PAD UP

To flip forward or back:
Press the CONTROL PAD UP + LEFT or RIGHT

The basic offensive moves:
To Punch (Low):
Press the B BUTTON

To Punch (High):
Press the Y BUTTON

To Kick (Low):
Press the A BUTTON

To Kick (High):
Press the X BUTTON

To Uppercut: Press CROUCH + HIGH PUNCH

To Foot Sweep: Press AWAY + LOW KICK

To Roundhouse: Press AWAY + HIGH KICK

To Execute Flying Punch: JUMP or FLIP + LOW or HIGH PUNCH

To Execute Flying Kick: JUMP or FLIP + LOW or HIGH KICK

Baraka:
Blade Fury: 3 BA,B
Blade Swipe: BA + Y
Blade Spark: 1/4 Circle BA, Y
Double Kick: 3 X (0)
Fatality 1 (Decapitation): 4 BA, Y (0)
Fatality 2 (Impale and lift): BA,F,D,F,B,(0)
Pit Fatality: 2 F,D,X
Friendship (Present): BL,U,2 F,X
Babality: 3 F,X

Jax:
Ground Pound: Hold A 3 sec, rel
Backbreaker: BL in mid-air(0)
Sonic Wave: 1/2 circle BA,X
Grab: 2 F,B
Super Slam: throw & tap Y
Fatality 1 Arm Rip): 4 BL, B(1)
Fatality 2 (Head Clap): Hold B,3 F, rel B (0)
Pit Fatality: 2 U,D,A
Friendship (Paper Dolls): 2 D,2 U,A
Babality: hold BL,D,U,D,U,A

Johnny Cage: 
Flame(High): 1/2 circle F,B
Flame(Low): 1/2 circle BA,Y
Low Blow(groin punch): B + BL
Shadow Uppercut: BA,D,BA,Y
Shadow Kick: BA,F,A
(Not confirmed)Gym Kick: F+A

Fatality 1(Decapiation): 2 F,D,U (0)
  Triple Decapitate: (must do decapitation first) D+X+BL+B (0)
Fatality 2 (Torso Rip): 2 D,2 F,B (0)
Pit Fatality: 3 D,X
Friendship (Autograph): 4 D,X
Babality: 3 BA,X

Kitana:
S.W. Punch: 1/2 circle BA,Y
Fan-Swipe: BA +Y
Fan-Lift: 3 BA,Y
Fan-Throw: 2 F, Y+B
Fatality 1 (Kiss of Death): hold A, 2 F,D,F,rel A
Fatality 2 (Decapitation): 3 BL,X(0)
Pit Fatality: F,D,F,X
Friendship (Birthday Cake): 3 D,U,A
Babality: 3 D,A

Kung Lao:
Hat Throw: BA,F,B
Bullet Kick: D+X [at top of jump]
Teleport: D,U
Whirl Spin: hold BL, 2 U,A[tap A]
Fatality 1 (Cut in half): 3 F,A(1)
Fatality 2 (Decapitation): hold B,2 BA,2 F,rel B
Pit Fatality: 3F,Y
Friendship (Rabbit Out of The Hat): 3 BA,D,X
Babality: 2 BA,2 F,X

Mileena:
Roll Attack: 2 BA,D,X
Sai-Throw: hold X 2 sec, rel
Teleport Kick: 2 F,A
Fatality 1 (Suck-N-Spit): Hold X 2 sec, rel (0)
Fatality 2 (Machine Gun Sias): F,BA,F,B(0)
Pit Fatality: F,D,F,A
Friendship (Flower): 3 D,U,X
Babality: 3 D,X

Rayden:
Shock: Hold Y 5 sec, rel(0)
Lightning Bolt: 1/4 circle F,B
Flying Thunder(superman): 2 BA,F
Teleport: D,U
Fatality 1 (Fry-'Em-Up): A 5 sec, rel, tap BL(0)
Fatality 2 (Super Uppercut): hold y 8 sec. rel (0)
Pit Fatality: hold BL,3 U,Y
Friendship (Kid Thunder): D,BA,F,X
Babality: 2 D,U,X

Liu Kang:
Bicycle Kick: hold A 5 sec, rel
F. Ball Low: 2 F,B
F. Ball High: 2 F,Y
Flying Kick: 2 F,X
Fatality 1 (Cartwheel): hold BL, 360 BA (1)
 [hold the block button and move the direction pad in a counter-clockwise]
 [motion. Motion breakdown: Up, Up/left, left, left/down, down, down/right,]
 [right, right/up, up--IF you are facing to the right, reverse this motion]
 [if you are facing left]
Fatality 2 (Dragon): D,F,2 BA,X (0)
Pit Fatality: BA,2 F,A
Friendship (Disco Fever): F,3 BA,A
Babality: D,F,2 BA, A

Reptile:
Acid Spit: 2 F,Y
Force Ball: 2 BA,Y+B
Invisibility: hold BL,2 U,D,Y
Slide: BA+BL+B+A
Fatality 1 (Cut in Half): [While Invisible] 2 F,D,X (0)
Fatality 2 (Eat Head): 2 BA,D,B (3)
Pit Fatality: D,2 F,BL
Friendship (Buy a Reptile Doll): 2 BA,D,A
Babality: D,2 BA,A

Scorpion:
Spear: 2 BA,B
Scissor Takedown: 1/2 circle BA,A
Air Throw: BL [in mid-air]
Decoy: 1/4 circle BA,Y
Fatality 1 (Burn 'Em!): hold BL,2 U,Y (2)
Fatality 2 (Cut in Half): hold Y,D,3 F,rel Y(0)
Fatality 3 (Toasty): 2 D,2 U,Y
Pit Fatality: D,2 F,BL
Friendship (Buy a Scorpian Doll): 2 BA,D,A
Babality: D,2 BA,A

Shang Tsung:
1 Flame: 2 BA,Y
2 Flames: 2 BA,F,Y
3 Flames: 2 BA,2 F,Y
MORPHS:
Baraka: 2 D,A
Jax: D,F,BA,X
Johnny Cage: 2 BA,D,B
Kitana: 3 BL
Kung Lao: BA,D,BA,X
Liu Kang: BA,2 F,BL
Mileena: hold Y 2 sec, rel
Rayden: D,BA,F,A
Reptile: Hold BL,U,D,U
Scorpion: hold BL,2 U
Sub-Zero: F,D,F,Y
Fatality 1 (Blow Up): hold X 2 sec,rel(1)
Fatality 2 (Soul Steal): hold BL,U,D,U,A (0)
Kintaro: Hold B entire fatality round, release when 1 step away.
Pit Fatality: hold BL,2 D,U,D
Friendship (Rainbow): 2 BA,D,F,A
Babality: BA,F,D,X

Sub-Zero:
Ground Freeze: 1/4 circle BA,A
Deep Freeze: 1/4 F,B
Slide: BA+BL+B+A
Fatality 1 (Ice Grenade): hold B,2 BA,D,F (6)
Fatality 2 (Super Freeze): 2 F,D,X(2)/F,D,2 F,Y (0)
Pit Fatality: D,2 F,BL
Friendship (Buy a Sub-Zero Doll): 2 BA,D,X
Babality: D,2 BA,X

Secret Characters (Shhh!):

The Secret Characters Jade and Smoke will appear from time to time to drop
hints about how to encounter them. Pay attention.

In the Living Forest screen, Jade will peek out from behind a tree when either
Kitana or Mileena are being used. If Scorpion, Sub-Zero or Reptile are in use,
then Smoke will peek out from behind a tree.
Note: If either Mileena or Kitana and Scorpian, Sub-Zero or Reptile are
facing off, I believe Player 1 gets the "secret character" that reflects what
character Player 1 is using: Jade for Kitana and Mileena, Smoke for Scorpian,
Sub-Zero and Reptile.

How to get to Jade:
In the stage beneath the "?", win any round using only the low kick button.
Try doing a lot of jump-kicks and sweeps. If done correctly, you have now
earned the honor of getting your butted kicked by Jade. She looks like a green
version of Mileena and Kitana, but she's twice as fast and 4 times as deadly.
I'll bet it has something to do with PMS. If you do happen to lose, do not
worry, you will be returned to the game, no harm done.

Sonya Blade appearance: She won't fight, but she's hidden somewhere.
This might be a helpful hint:
To fight Sonya (UNCONFIRMED):
    1. Double flawless Jade with Kitana (only!).
    2. Select Kitana again on the character select screen.
    3. Perform her birthday cake friendship (D,D,D,U,A) while
        facing Sonya after fighting Sheng Tsung. The friendship must
        be performed directly between Shao Kahn's legs. Shao Kahn
        will say "EXCELLENT!" and the screen will scroll over to Sonya's
        pedestal. Next Sonya will be hilighted and Shao Kahn will strike the
        ground with his sceptre and the chains bonding Sonya will release her. 
        Sonya will walk off of the pedestal and face Kitana while simultaneously
        bowing in her direction. Next, Jade will replace Kitana in a puff of smoke
        and the fight begins. You play SONYA!!!!!

Smoke:
Occasionally, when someone does an upper cut, a guy will pop out of the lower
right had corner and sing "Toasty!". If this happens during the Portal Stage,
quickly hold DOWN and press START before he goes away and you get to challenge
Smoke, a grey ninja who needs a bath(or is that smoke?)

Noob Saibot:
Huh? Never heard of this. Anyways, according to Game Player, if you can make
49 consecutive wins(playing against a second player at least some of the time),
the winning streak counter will reset. Is it possible to get Noob? Well, looks
like we will have to wait and see.
    To reach Noob Saibot win 50 consecutive battles, 1 or 2 player. If he beats
    you, you stay at 49 wins, so you can just keep winning one battle until you
    manage to beat him. You MUST beat him to get over 50 wins in the high score
    table.
I have been unable to confirm this, and a friend and I tried this. I let him beat
me 50+ times in a row.(OK, I was trying to win, he's just better than me) and it
didn't appear to work.

Note of interest:

* Don't use punch buttons during winning rounds(where if you win, the words
"Finish Him" would appear on the screen) or Fatalities or Babalities won't
work at all. This has not really been confirmed by myself. Experiment and see.

* Pit Fatalities: These must be excuted while standing exactly next to 
your opponent, and can only be done in the Kombat Tomb and Pit II stages.

* Don't forget to hold BLOCK while inputting a fatality that involves 
pressing UP. If you don't, you jump and ruin the fatality.

Neat-O Secrets:
Random Select:
Highlight the top corner on your side(Liu Kang for Player 1, Reptile for 
Player 2) and press START while holding UP. Only a true master can win 
with any charater at random.

Disable Throw:
At the character select screen, just after both players have chosen their 
character, hold DOWN and Y on both controllers. Just before the fight
starts, you should see a message that reads "Throwing Disabled".

Dead Pool Fatality:
After winning the second round,when the "Finish Him" message appears, press
and hold LOW PUNCH and LOW KICK buttons, move in close and execute a normal
uppercut(with those buttons still held down), your opponent gets an acid 
bath. Isn't that nice?
Super Spiffy Dead Pool Bonus:
When the skeleton floats to the surface, hold Down and the skeleton will
say something.

Two Player Survival Mode:
At the START prompt on the Title screen(red screen with dragon logo), hold
down L&R buttons and push start. Now both players select teams of 4 
characters for an all-out war. This is like a tag-team bi-directional 
endurance match from Mortal Kombat I.

Other Nifty Secrets:
Shang Tsung's Kintano Morph: It doesn't appear to work like it does in the
arcade. Well, no duh, this isn't the arcade.

CONFIRMED
Kano Morphs: they do NOT exist, so don't ask, they are not in there.
Recently discovered information: Kano Morphs: Play Mortal Kombat I, choose
Kano. Enjoy.

Pong: Does anyone out there lack a life? If so, fight 250 battles in a row and
report back to us.
    To play "Pong," play until the 250th battle. Geeze, you must be really bored
to try this one out.

*There is a special type of punch commonly referred to as a "heavy punch." When
the opponent jump-kicks at you, press High Punch once. You must do it before he
is lined up with the punch. Properly timed (which is VERY hard to do), he will
fall into the punch, and take more damage than an uppercut! The heavy punch
hits several times, rather than just once. Also, this knocks the opponent way
up in the air, and can be followed by any move except Kitana's fan lift. Many
painful combos can be done after a heavy punch. 

Slip off spikes after a pit fatality uppercut: The CPU does it? Is it random?
Let's take a peek:
    If you do the Pit Fatality in the Kombat Room, knocking the opponent onto the
    spikes, press down on both controllers before the opponent hits the ceiling.
    He will slide off the spikes and hit the ground.

On the player select screen, pressing Up + Start while in your corner (Liu                   
Kang for Player 1 or Reptile for Player 2) will cause the computer to
randomly select a character for you. This makes 2-player games more fair.
Only a true Mortal Kombat Master can win with any character at random.

    While no one is playing, press down on both controllers to see the high
score table.

Reset your SNES while holding down BOTH L&R on BOTH controllers. 
Shao Kahn and Kintaro have a little interaction

All of the following codes have to be done at the character select menu and
have to  be done fast, and I do mean FAST!!! If done correctly, you will hear
a sound that will let you know the code has been inputted correctly, other
wise, try again.
Note: These codes only work for single player games.

CPU HANDICAP
D,U,R,U,L Then Select
---------
29 KREDiTS
L,U,R,D,L Then Select
---------
FiGHT THE SHADOW GUY
L,U,D,D,R, Then Select
---------
FiGHT JADE
U,D,D,L,R, Then Press Select
---------
FiGHT SMOKE
U,L,U,U,R, Then Select
---------
FiGHT KiNTARO
U,D,D,R,R, Then Select
---------
FiGHT SHOW KAUN (LAST GUY)
R,U,U,R,L, Then Select
---------
Legend
U -Up      R -Right      L -Left     D -Down      Select -Select

Glitches?

Try this.

Pick Baraka (also works with most people's throw that throws opponent 
kinda far) and Cage (because he has an easy friendship, but can do 
anybody, but pick Cage for now).

Don't hit punch with Cage the entire round, and have baraka kill you with 
a throw. As soon as he throws you, start rapping on DOWN and HK. Cage 
will go into his friendship, and Baraka can bash him right out of it.
If you do Mileena's, try pushing her away from the flower, then throw 
her. She just stays in the air, and you can upper-cut her without a lag 
after.

JUST TRY IT!

What's a Fergality?:

It's something SNES owners need not concern themselves with. Fergalities
only appear to work on the Sega Genesis version of Mortal Kombat II. If you
feel the need to know what a Fergality is, then go get the Sega Genesis MKII
file available via this link.


Whew, that's all of them I've been able to dig up. Have fun memorizing all of
these. Practice a lot and then show off to all your friends. This document
should keep you busy for a while.

Final Note:
Am I missing something here? Are one of these hints in error?
If so, please alert me to my ommission and please correct my error. I will
quickly correct my mistake and re-post this compilation.

Please be aware that at this time I do not own a Super Nintendo. I own a
Game Boy and Game Gear, I am mainly compiling this for a friend who owns
a SNES.