Here you go.  I included a savestate that has all the characters available.  You can either put the PSX folder into the bizhawk directory, or go into it and add the cheats folder to the PSX directory (if you have a savestate you don't want overwritten).



I hid the lifebars and stretched/recolored a BG layer in the Village of Kaede (I've only tested it on this stage) stage for the 2nd shot (I've since found something to hide the jewels).  The Magenta isn't a solid color (I didn't encounter this in the other 2 games, so this issue's exclusive to this game), and after poking all the addresses, I don't think it can be made a solid color (was able to pixel mod all the tiles though).  Not through the GPURAM, anyways.



Making their transparent colors visible isn't an option.  TBH, it'd be easier if I just hid the BG layers, and color modded the black color to each character so that it didn't blend in with the BG (even though a character may have more than 1 set of body colors).



And there's also this, which partially uses color mods from the GPURAM (just to hide things). I took the timer icon, and messed around with it as much as a I could to get it to cover the screen (I haven't been able to affect the Y position to it).  Despite not entirely covering the screen, it's a solid color.

- You can mess up your cheats if you're not careful with how you use the hex editor:
1. Any address that gets frozen is temporarily added to the cheat list until unfrozen.  If you close the emulator while the addresses are frozen, they'll be added to your cheat list and toggled on.
2. Any frozen address that is toggled off via the cheat menu should remain in the list when you unfreeze the addresses (toggling them on and off won't remove them).  Try to either make sure they're not toggled on before unfreezing addresses, or avoid freezing these addresses again.
3. Avoid poking large groups of addresses if you're compiling a list of cheats.  Whatever's in your cheat list will get affected.
4. What you should proabably do is make 2 .cht files, take the 2nd one out of the cheats folder, and copy/paste whatever you don't want removed/edited to it using a text editor.

- You'd probably be better off using the RAM Search to find cheats (the above applies to whatever you do to the addresses in the RAM Search as well).  Anything you find with Artmoney/Cheat Engine will need an offset applied to it the next time you use Bizhawk.  On the plus side, you could use Bizhawk to get the color values, and then search for them in another emulator.

- Anything I found in the MainRAM could be converted into a gameshark code, but I had no luck with any of the GPURAM cheats.  Only mentioning it because I was able to do it with what I found for GBA and NDS.   ....Any MMMZ1-4/MMZX/MMZXA players that want Zero/Vent/Aile/Grey/Ash to have their icon replaced with the boss icon from Mega Man X2? :p

0F0080   7C1F   N   GPURAM   1   P1 Mask Color   w   h   0   NONE   
0F4080   03E0   N   GPURAM   1   P2 Mask Color   w   h   0   NONE   

- If it matters, it's the version dumped by Aguia.
- You can hide almost everything but a super BG effect, and Mahiro's spider thread.  Couldn't find them in the GPURAM.
- I didn't bother with color mods for the assist characters.  If you really want to rip those, or their effects, I could go poke around to go find those.
- I also didn't bother with hiding the small portrait to Mahiro's attack where she uses your assist character against you because they don't use a new attack.
- Magenta BG's for characters, Black BG's for effects.  I don't know if the BG color mods will hide everything in the other stages.  Stage Modifier's set to the stage I tested all of these on.
- If you'd prefer the character's Y position to be on the ground, just edit the value to 00000000 (yeah, the position values are 4 bytes).
- Unlock bosses (so you don't have to beat the game 3 times) should probably be turned on before you go into any of the vs modes.
- "Use with P1 states?" is for if the sprites don't display correctly or if you want the effect to appear during the move.  If you want to know what value you should set these to, perform the move, pause the emulator, right click on the cheat, select "view in hex editor", and note what value the highlighted cheat changes to.  Close this when you're done with it because aside from risking modding/deleting cheats, it can cause the emulator to slow down (keeping track of too many value changes).
- Fade to black's for super moves.  Even though you might be able to use the state mod to make the character's super animation play, you could use this during the super move to stop the character's sprite from getting something (? don't know what it is) layered over it.  The rest of the super move won't trigger until after the BG has faded to black though, which is why it has a compare value of 00000000 (it's kinda like a conditional cheat).
- I may need to look more into sound modding.  I'm not pleased with what I found so far, because it only works with Artmoney.  Poking values in SPURAM sorta works, but not the way I was expecting (doesn't disable music, and there's multiple addresses you'd have to search for to stop 1 sound channel from playing).

- I haven't tested the BG color mods beyond the stage the stage modifier is set to.
- I didn't bother with hiding all the effects for this because you can use the state mod to turn your character into them.
- You probably won't need to use P1 Y Position to reposition your character, because Camera Y can be set to 0010 and it'll go below the floor.
- Don't set P1 States +256 above 1.
- You don't have to go through all 511 values to find the character's stuff.  Just set +1 to a multiple of 16 (10, 20, 30, 40, 50, 60, 70, 80, 90, A0, B0, C0, D0, E0, or F0.  It's easier to use if you don't set the values to display as Unsigned).  If the character remains in their standing animation, there's probably nothing around it, and you can increase the value to the next multiple of 16.