If you ever played Pokémon 3rd generation (Ruby, Sapphire, and Emerald), then you probably know the three legendary Golems: Regice, Regirock, and Registeel. They are also the key to obtain Regigigas in Pokémon Platinum. All of them have unique patterns on their faces that look similar to alphabet letters. Regirock has H, Regice has T, and Registeel has O. Why is this significant? The letters make uo the name of the compound HTO ( Hydrogen Tritium Oxygen) which is produced during nuclear explosion.
In order to even meet the three Golems, you also need two additional Pokémon: Wailord and Relicanth. Wailord looks similar to the B-29 bombers used in WWII and Relicanth looks like a missile without its fins.
The Golems' cries sounds weird as well. If you listen closely, Regirock's cry sounds like bomb shelter being demolished, Registeel sounds like an explosion, and Regice sounds like the screams of people. To further perpetuate this matter, if you raise them from the start, they all start with the move explosion. Their final learned set is Hyperbeam at Level 89. 8/9/1945 is the day of the Nagasaki bombing of Japan in WWII by the second atomic bomb ever produced.