Permanent Mega [Request]

[Rubedo]

So, I’d like to start by saying that it should be obvious I don’t intend to play the game with any online features. I just really enjoy using Debug because it lets me have my whole team in a specific type of ball (Reborn Ball, for anyone wondering).
 

While experimenting with Debug in my latest run, I noticed the “Form” option for Pokémon and saw that their forms could be changed into their Mega Evolutions! Naturally, I got excited about the idea of trying an all-Mega run with basically every difficulty-altering password enabled.

However, I noticed that after leaving battle, the Pokémon always reverted back to their base forms, along with a pop-up message. I’m not sure if anyone knows a way to disable this, or if there’s a mod that allows permanent Megas?

This is just for fun, guys, so please don’t eat my soul. <3

[scoober19]

im also trying to figure out how this works for my own run too 

[.jbd]

@scoober19 @Rubedo
 

[Yerochasc]

The always mega mod download seems to have been deleted, so for anyone who is wondering what the codes you need to change are for V19.5 there are actually 2 you need to remove. In the Scripts sub-folder of Reborn open both of these files in a text editor, notepad works fine.

The first is Battle.rb and remove the line:
"i.makeUnmega if i.isMega?"

Then go into the Pokemon.rb file and remove the code:
"def makeUnmega
    if !self.originalForm && $Trainer.party.include?(self)
      print "this mon's original form was not set, somehow. please report this: species:#{@species} form:#{$cache.pkmn[@species].forms[self.form]} thx <3"
    end
    self.form = self.originalForm ? self.originalForm : 0
    self.ability = self.originalAbility if self.originalAbility
    self.originalAbility = nil
    self.originalForm = nil
  end"

Easiest way to find these is by searching "unmega" they should be the only results. If you only remove one of them it won't work and will revert back to the base form at the end of a battle. 

[Rubedo]

On 12/9/2025 at 7:06 PM, Yerochasc said:

The always mega mod download seems to have been deleted, so for anyone who is wondering what the codes you need to change are for V19.5 there are actually 2 you need to remove. In the Scripts sub-folder of Reborn open both of these files in a text editor, notepad works fine.

The first is Battle.rb and remove the line:
"i.makeUnmega if i.isMega?"

Then go into the Pokemon.rb file and remove the code:
"def makeUnmega
    if !self.originalForm && $Trainer.party.include?(self)
      print "this mon's original form was not set, somehow. please report this: species:#{@species} form:#{$cache.pkmn[@species].forms[self.form]} thx <3"
    end
    self.form = self.originalForm ? self.originalForm : 0
    self.ability = self.originalAbility if self.originalAbility
    self.originalAbility = nil
    self.originalForm = nil
  end"

Easiest way to find these is by searching "unmega" they should be the only results. If you only remove one of them it won't work and will revert back to the base form at the end of a battle. 

Might be because of the most recent updates, but I've tried this on a completely unmodded version of Reborn and it just crashes my game, unfortunately

[Katabatic]

On 2/28/2026 at 9:57 AM, Rubedo said:

Might be because of the most recent updates, but I've tried this on a completely unmodded version of Reborn and it just crashes my game, unfortunately

Yes, because there's multiple places where "unmega" is referenced. A regex search shows:

 

Battle

Battle_MoveEffects

Battler

Pokemon

RandomizerUtils

Storage

 

There's also AllGen Reborn if you're on All Gen mod.

 

That's not to say that you have to remove unmega everywhere, but if it's calling an undefined function, it will probably crash.