Press L + R + C when selecting your character. Press L + R + X to fight as Picky in orange armor.
Bark's Santa costume
Highlight Bark at the character selection screen and press A + B + C.
Big Mahler stage secrets
Press X on controllers one and two at the Big Mahler stage when the round number appears to have an F-14 jet fly overhead. If this is done when both players are fighting as Kumachan, the ground will change into the shape of Panda Chan's face.
Completion bonus
Complete courses A through I to access all hidden characters, more options, bookkeeping, and portraits.
Fight as Bean
Select single player mode and complete the Muscle course.
Fight as Janet
Select single player mode and complete the Girls course.
Fight as Niku (meat)
The game disc must be loaded on the Saturn thirty times. After this point, Niku will always be accessible by highlighting Kumachan and pressing X. Niku's moves are similar to Sanman's.
Fight as School Girl Honey/Candy:
Complete course A. Highlight Honey and press X to be red or Z to be blue.
Fight as the AM2 palm tree
Play the game for 84 cumulative hours. Highlight Kumachan and press Z. Your character will be the palm tree from the AM2 logo. This character may be fought after all courses are completed with five different characters, 1000 cumulative games are played, and course I is played with Niku
Fight as Virtua Fighter 1 version Shiba
Press X or Z to select Shiba at the character selection screen.
Fight as Yashinoki
Play the game 1,000 cumulative times and have five all clear characters.
Fighting training dummy
Enter training mode, and press Start after the fight begins. A Japanese command list of moves will be displayed. Scroll one line up the list and exit this screen. The dummy will kick at you after returning to the ring. Scroll to a different command on the list for a different action by the dummy.
Full screen pause
Pause game play and press X + Y + Z to remove the paused game text.
Hidden files
Place the game disc in a PC-compatible CD-ROM drive. Extract the "omake___.lzh" file to view thirteen JPEG game images. View the "READ__ME.DOC" file for Japanese text about the game, including comments from the makers of the game, including Suzuki Yu. A move list for all the characters, except the secret/hidden ones is also present in the text.
Hidden options
Press L + Start at the character select screen to adjust the game's difficulty, fight length, number of rounds and other options.
Hyper mode
Enable survival mode, and finish within the three time limits (3 minutes with at least 2 wins, 7 minutes with at least 6 wins and 15 minutes with at least 11 wins). This mode is also available after defeating the CPU in team battle mode using the default settings. Hyper mode will be selectable under the options plus menu.
Mini-game
Delete all Fighters Megamix saved game files. Complete courses A through H. Course I must not be completed. Place OK marks on 1200 moves in training. Go to course I and press L. A screen full of question marks will appear. Find the two matching pictures to view a picture of Janet. Complete the mini-game again to view her without armor. Complete the mini-game again to view her with less clothing.
Option plus menu
Play the game 500 cumulative times to gain three additional option plus selections. These allow survival mode cage selection, and allowing player one or player two to have no damage.
Training characters
Increase the number of OK counts for all characters in training mode until the total exceeds 600. It is not necessary to completely train a single character.
Training mode music select
Press Start to display the move list, then press L or R to change the music.