What’s a Pokédex entry you’ve never forgotten?

When Mega Evolution wears off, the mucus that formed the false Eelektrik melts away and disappears. However, it can be preserved in its jelly-like form through freezing. Some people put this preserved mucus to new use in beauty regimens or strength training, though it’s not clear how much benefit it yields.

That and Gardevoir

I admire its devotion to its trainer, literally making black holes that will destroy everything if it means its trainer will be safe