A: Yes, with the UPR tool, your starter can be any of the 493 Pokémon from Generations 1-4 (since HeartGold is Gen 4). This includes Arceus, Darkrai, and Shaymin.
A: Absolutely not. The randomizer corrupts the original data signatures. Pokémon Home will detect the illegal Pokémon (e.g., a level 5 Dialga with a non-legal ability) and ban your account. pokemon heartgold randomizer rom download android
A: Partially. Location-based cheats (like "walk through walls") work. Pokémon encounter cheats will conflict because the randomizer changed the encounter table. Use cheats sparingly. A: Yes, with the UPR tool, your starter