Who's the biggest industry plant in the game?
SPOILERS FOR ROY AND OLIVIER'S FATE EPS
I've got a Dermatology exam the day after tomorrow but if I wasn't doing this I'd be procrastinating some other way so fuck it. Anyways, to clarify, I guess how I'd define an industry plant is a character whose amount of content given (units/alts, appearances in events and other characters' Fate Episodes, etcetera) is incongruent with their actual popularity with the public. Then again, the concept is kind of hard to define: the DKs are always given a minimum of one piece of content basically every year and are treated incredibly kindly both in the main game and in supplementary material, but they are also incredibly popular, so it's kind of a chicken-and-egg situation in that I honestly don't know whether they started getting that much content because they were that popular or whether they got so popular because they received that much content.
Anyways, I was making my way through the few Fate Eps I had today, and as it turns out, who features in Roy Mustang's Fate Episodes? None other than Juri, who even gets to receive some pretty grand praise from Mustang himself. And in Olivier's episodes, after some scenes with Noa, he recommends that she go visit Mahira: with her, of course, is none other than Joy, who becomes their guide and blah blah blah. Both these appearances got me thinking.
I don't dislike Juri, far from it, but I don't think there's any denying that he gets far more special attention than one would expect compared to his contemporaries: hell, anyone who was involved in his event gets special attention. I still remember the reactions Grand Poseidon received. And of course, Joy was given the anni-SSR title (promptly wasting it by being awful and dragging Summer Mahira down with him in an attempt to make them synergize), and has also had quite a few appearances in other characters' Fate Episodes and whatnot. Other characters whom I've seen referred to as industry plants include Cassius and Raziel. But to be honest, I'm not really in-touch with the broader GBF community, and I have no true idea as to these characters' actual popularity.
So I'd like to ask: what character do you think is the biggest industry plant in Granblue? Could be your personal opinion (on some character you dislike or think is unpopular but which receives a lot of attention), or you could try to be as objective as possible (as far as you can be objective with something like popularity, anyways).