>>47716546>Both are fairy type, and themed around the fairy type>Both are found in the same areas>Both start out as spritely creatures before evolving into a physically frail, small form that uses magical hair to boost it's abilities>Both evolve at the same levels (once at 32 and again at 42)>Both share the same BST across their three stages (starting at 265, going to 370 and finally 510)>Both are some variation of mixed attacker, each specializing in the opposite of what the other does (Hatt prefers special attacks, Grimm physical ones) but still having a decent attack/special attack stat>Both are also slow and bulky (though Hatt's significantly slower)>Both also learn the exact opposite Boosting Moves of the counterpart (Hatterene gets Swords Dance and Calm Mind, Grimmsnarl gets Bulk Up and Nasty Plot)>Both have similar coverage and can do both support or offense well (boosting up and using drain attacks or setting field effects to aid allies)>Complementary primary types (Dark vs Psychic)>Complementary gender rates (100% Male vs 100% Female)>Both share the exact same base experience and catch rate>Both have a G-Max form based on a fairy tale and is used as the ace of one of the two lesser rivals who went on to become Gym Leaders>Both are among the very few Pokemon that are part of a three stage line where all members of that line can be found in the wild>Naturally Occurring G-Max forms are also version exclusive, even during events (requiring someone with the opposite version to get you into a raid on their end)And finally
>Both are in the Fairy Egg Group>Both are thematically tied to Magical Hair>Both have the exact opposite reactions to emotions (one feeds on specific emotions, the other shuns specific emotions)They are what you'd call companion lines, like Electrabuzz and Magmar or Miltank and Tauros.
>inb4 you reply to all of this by just putting your head in the sand 