>be Eternatus, the Third Legendary™ of the eighth generation that uses Pokémon Sword and Pokémon Shield as core games
>you are such a non-character for the plot that up until the climax your existence as an individual isn't even recognized
>you come to action at same time as the main legendary duo of the generation not to stand above them, but to lose to them
>your "real deal form", isn't permanent, but it's not temporal either, it's not even dexcut fodder, it's literally not usable at all, only seen as an enemy in an interactive cutscene
>you have so little in common with the main legendary duo that if anything your only relation is how much you are meant to suck compared to them (typing match up, generational gimmick synergy and role in the story)
>DLC comes out with another main legendary that actually has a relationship with the duo (royal themed guardian of the region who fought you in the past), the guy even has two fusion forms (like the third legendaries of the other english-speaking regions), extra forms that subvert the crippled-like base form (like the third legendaries of the three previous generations), effectively replacing you as the third legendary of the region
Is Eternatus the JUSTest third legendary? Even sticking to the games only I can't think of one who was done dirtier, even Mewtwo's mansion and cave treatment and the whole Zygarde moving to Alola to help you protect it from Ultra Beasts is more dignified than this guy's story.