PK4: Proto Japanese DP (Aug 2006 Build) Debug Pokémon

In June 2019, a Japanese copy of a Debugging variant of Pokémon Diamond Version was found and subsequently dumped.
In May 2020, the source code for Diamond and Pearl was found, and the game could be compiled, with the debug features intact.

This post relates to the 2019 leak.

Debug start
Debug menu on Title Screen (Select) > Debug Start
The player will start the game in Jubilife City, with 3 starters, being Infernape, Piplup and Finneon.

Pal Park Entry 1
Debug menu in-game (R + Start) > Tamada > Pokepark Data 1
This first set has Charizard, Squirtle, Wartortle, Caterpie, Sandshrew, and Tentacool.
Given these entries have a Set PID of 0, they cannot be shiny.

Pal Park Entry 2
Debug menu in-game (R + Start) > Tamada > Pokepark Data 2
This second set has Bulbasaur, Beedrill, Clefairy, Sandshrew, Tauros, and Dragonair.
Given these entries have a Set PID of 0, they cannot be shiny.

Box of Slowpoke
Debug menu in-game (R + Start) > Taya > Current Full
This debug option fills the current box to the brim with Slowpoke, all clones.
Since the TID and SID is set to 0, they cannot be shiny.

Box of Slowbro
Debug menu in-game (R + Start) > Taya > Box Full
This box is full of Slowbro. There's 540 different Slowbro. Their PIDs are set, so they can't be shiny.

Test Burmy
Debug menu in-game (R + Start) > Tomoya > Test
3 Burmy added to party. Their PIDs are set, so they can't be shiny.

Roaming Darkrai
As previously reported, a Roaming Darkrai subroutine was found in the final build of the games.
With the debug version of the game, one is capable of encountering it.
Debug menu in-game (R + Start) > Saito > Roaming Pokémon > Location Change > Dark
In the debug menu, Darkrai uses the beta name Dark.
 

As usual, these files would be illegal and should not be transferred. Use at your own risk.

[We will not distribute the Debug ROM, and it is against our rules to ask for it]

Thanks to @BlackShark for the dump and @jojo12100 for the heads up, in regards to Slowpoke, Slowbro and Burmy.