they're not "MIA" as people thought they are. most of them perform at stage shows/plays after their series which are only viewable if you're in Tokyo.
I was very careful to research the whereabouts of each person when I made that post; a lot of "where are they nows" and updated photos people will post will be wrong or just someone else with the same name, so I did try to be careful. I know that some of them go on to do stagework that's not very publicized, but it was clear that some of the performers...just retired and disappeared. (Not much info is known about someone like, say, Green Sai. And I think it says something when cast members have trouble locating one another.)
A couple of people have resurfaced since I made that post (Green Two, King Ranger), but at the time, there was hardly any updated, available information about certain cast members who had left the industry.
And you can't trust Wikipedia -- not even the Japanese one, but certainly not the English one. A lot of times, there will be actors who don't really work that much, but they'll list them as "former/retired" actors, when it's just they don't really do much work. (Kenta Satou's not done much recently, so you could mistakenly assume he's retired, but he isn't. Jetman's Koutarou Tanaka hasn't worked in a while, and people assume he's retired, when he's never really officially said so.)
