Marvel vs. Capcom Cheats (Dreamcast)

Highlight Morrigan, then press Up, Right(2), Down(4), Left(2), Up(4), Right(2), Left(2),
Down(2), Right(2), Down(2), Left(2), Up(2), Right(2), Up(2), Left(2), Down(5)

To play as Onslaught, successfully defeat each of the secret characters in arcade mode,
saving them to a memory card. Once al characters have been enabled, the Onslaught mode
will open up on the title screen, enabling player 1 to play Onslaught against player 2 or
the CPU.

Highlight Zangief, then press L(2), D(2), R(2), D(2), L(2), U, R, U(2), R(2).

To obtain the helper of you choice, you must always hold down start and then the
designated buttons, just before selecting your second character. 

  Shadow
  WP+MK+FP

  Sentinel
  MP+MK+FP

  Storm
  LP+LK+HP
  She can be used up to 6 times.

  Thor
  LK+MP
  He can be used up to 8 times.

  Unknown Soldier
  LP
  He can be used up to 4 times.

  Pure and Fur
  LK
  She can be used 5 times.

  Anita 
  LP+MP+HP
  She can be used 5 times.

  Lou
  MP
  He can be used 8 times.

  Rogue 
  LP+MP+HP+LK   
  She can be used 7 times.

  Colossus
  LP+MP+MK
  He can be used 5 times.

  Michelle Heart
  LP+LK
  She can be used 6 times.

  King Arthur
  LP+MP
  He can be used 8 times.

  Saki
  HP
  She can be used 7 times.

  Ton-Pooh
  LP+HP
  She can be used 9 times

  Iceman
  MP+MK
  He can be used 4 times.

  Cyclops
  LP+LK+MP

  Magneto
  LK+HP
  He can be used 7 times

  U.S. Agent 
  MK+HP
  He can be used 5 times.

  Psylock
  MK
  She can be used 5 times.

  Devilot
  MP+HP
  Can be used 5 times.

  Juggernaut
  LP+MK
  He can be used 3 times

To have Sentinal as your special partner, simultaneously press Medium Punch, Medium Kick
and Hard Punch after choosing your tag team.

If you can beat any of the secret characters and save the data into your VMS, you can use
that character without reentering the code.

To play as hyper venom. Put the cursor on Chun-li and press: R, D, D, D, D, L, U, U, U, U,
R, R, D, D, L, L, D, D, R, R, U, U, U, U, L, L, U.

  Pressing kick to select him will give you ice blue venom, punch will give you blood red
venom.

  As with all secret characters in the home version, you only have to enter the code
once. After it is entered go to Chun-li and press Up to select Hyper Venom. Once the
Dreamcast is turned off then on again, you will have to reenter the code.

During the a match do the following to have diffen form of Ryu at your disposal. (Level 1
super meter is needed.) 

  Evil Ryu: Half-circle back Fierce Punch 
  Ryu as Ken: Half-circle back Medium Punch 
  Turn Back: Half-circle back Quick Punch

Press START to pause game, then HOLD Y and press X. This will enable you to see the
characters and backgrounds clearly without the tinted screen.

Hold all three punch buttons at the Vs. screen to swap who starts match first (i.e. if you
chose Ryu then Chun-Li, you would start the match with Chun-Li, and vice versa).

Place the cursor on Zangief, then press Left, Left, Down, Down, Right, Right, Up, Up,
Down, Down, Down, Down, Left, Left, Up, Up, Up, Up, Right, Left, Down, Down, Down, Down,
Right, Right, Up, Up, Up, Up, Left, Left, Down, Down, Down, Down, Right, Down.

Choose Zangief. Do a 1/2 circle back, quick kick, and he will flash and turn into his evil
form.

At the character select screen, move the cursor to Zangief, then press L, L, D, D, R, R,
D, D, L, L, U, U, U, U, R, R, L, L, D, D, D, D, R, R, U, U, L, L, D, D, R, R, U, U, U, U,
U. A Golden version of WarMachine should apear above Zangief.

Sentinel Attack (small form): Any Attack. 
  Dashing Attack (small form): Down, Down/Forward, Forward + any Kick. 
  Magnetic Tempest (small form): Down, Down/Forward, Forward + any Punch. 
  Unblockable Prison (small form): Forward, Down, Down/Forward + any Punch. 
  Teleport (small form): Down, Down/Back, Back + any Kick. 
  Magnetic Shockwave (small form): Down, Down/Forward, Forward + 2 Kicks. 
  Mega Optic Blast (small form): Down, Down/Forward, Forward + 2 Punches. 
  Hand Crush (large form): Any Punch. 
  Sentinel Attack (large form): Any Kick. 
  Hand Drill (large form): Down, Down/Forward, Forward + any Kick (when on the ground). 
  Laser (large form): Down, Down/Forward, Forward + any Punch. 
  Unblockable Prison (large form): Forward, Down, Down/Forward + any Punch. 
  Move (large form): Rather than going forward and back like in his small form, he now
can go up and down in the air. 
  Laser beam (large form): Down, Down/Forward, Forward + 2 Punches (same as the ordinary
laser, but he fires five of them).

Highlight Chun_li then press Right, Right, Down, Down, left, Left, Right, Right, Down,
Down, Left, Left, Up four times, Down, Down, Right, Right, Up, Up, Down four times, Up
four times, Left, Up. Orange Hulk appears above Ryu.