The fan community, upon learning of my discovery via a long-defunct Geocities forum, went wild. Theories exploded. Some claimed that “1636” was a nod to the year of the first recorded forest fire in Japanese history (which is historically inaccurate—the first major recorded fire was in 1657, the Great Meireki Fire, but the fanatics rounded down). Others argued it was a developer’s inside joke: a tribute to a childhood pet squirrel that had chewed through a power cord and fried a development kit in October 1636 of the Japanese calendar? That made no sense, but the internet loved it.

Let me rewind to the historical parallel. The year is 1636 CE in the human calendar. In our world, that year marks the height of the Little Ice Age, the founding of Harvard College, and the beginning of the Pequot War in New England. But in the lore of Pokémon FireRed , 1636 is the year a cartographer named Ezekiel “Red” Maple, an ancestor of Professor Oak, sailed from the port of Vermilion City to explore the uncharted “Sinnoh Tangle.” His ship, The S.S. Anne , was lost at sea for six weeks. When he returned, he was clutching a small, burnt diary. The diary contained a single sketch: a rodent with a curled, fiery tail, storing nuts in a tree hollow. Below the sketch, written in faded ink, was the word “Risukooru” — an archaic transliteration of “squirrel.”

Most historians dismiss this as a sailor’s fever dream. But the code in FireRed tells a different story.

By Professor Thaddeus O. Birchwood, Department of Cryptozoological Glitch Studies, Viridian City University (Unpublished Memoir, 2004)

Why does it matter? Because every time you play FireRed and walk through the tall grass of Route 1, the game’s RNG cycles through 1,500 possible encounter slots. Slot 1636 is empty. But for a single frame, the game almost looks there. If you press A at the exact moment the frame hits, the screen will flash orange for a millisecond. That is the FireRed Squirrel. It is not a Pokémon. It is a memory of a memory—a burnt acorn stored in a tree hollow that no longer exists, in a forest that burned down three hundred and seventy years before the first Pokémon game was ever conceived.

So the next time you hear a rustle in the bushes outside, or see a squirrel bury a nut with frantic, purposeful energy, consider this: it might be hiding an Ember. It might be waiting for the right player to press A at frame 1636. And if you ever manage to catch it? Do not save. Do not trade it. Let it run back into the time-between-frames, where the autumn of 1636 never ends, and the forests of Kanto are still full of fire-colored squirrels.

End of log.

The truth, I believe, is more melancholic. In the final, stable build of FireRed , the squirrel was erased. Its cry (a mix of a chirp and a crackle) was reassigned to the move “Sweet Scent.” Its sprite data was overwritten by a placeholder tree tile. But the 0x1636 index remained, a digital fossil. It’s what programmers call a “ghost in the machine”—a remnant of an idea that was too strange for the final product: a squirrel that survived a fire in 1636, only to be deleted in 2004.