Change the title screen with the last seen Pokemon

Hi, I'm about to release the first demo of my game but I want to add a little thing before :)
In my game, you will battle trainer than have legendary pokemon, so I want than the title screen change when you defeat that trainer (The title screen will be the trainer's legendary)
I search around the script in essentials but I didn't found where the title screen is ''loaded'' when you open the game.
I know who to add game switches in script so I will not have difficulty to add the part when the title screen change when you have X switch On/Off

So my question is: Where the title screen script?

Thanks in advance and sorry for my bad english.

I assume you mean the screen where you have to press start (or enter) to continue, which normally shows a Pikachu. The script is called in "Main", find the line "return Scene_Intro.new(['intro1'], 'splash')". The splash image is the one used as background for the press start screen. The actual script which runs at that point is "Scene_Intro". So if you want to change the Pokémon shown there I suggest removing the Pikachu from the splash image and adding code in "Scene_Intro" to show the correct sprite on the right position ("def openSplash" seems to create the screen).

Badhaas said:

I assume you mean the screen where you have to press start (or enter) to continue, which normally shows a Pikachu. The script is called in "Main", find the line "return Scene_Intro.new(['intro1'], 'splash')". The splash image is the one used as background for the press start screen. The actual script which runs at that point is "Scene_Intro". So if you want to change the Pokémon shown there I suggest removing the Pikachu from the splash image and adding code in "Scene_Intro" to show the correct sprite on the right position ("def openSplash" seems to create the screen).

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A slight problem that might be had, the trainer's game variables and such have not been loaded at this point. You'll have to load them yourself.