No... my guess is the identity won't be revealed until the final episode. Maybe that will be the last "mystery"?
Oh, another point. Since this is anime, expect mild supernatural elements. Nothing outrageous like alternative worlds (Derp Key), but there are some mild elements. But you probably already figured that out by that "panda" character
Well I'll say this. It is trippy at times, but unlike Penguindrum which is trippy for the sake of being trippy (aka pretentious), it's not too forced. Not sure what your stance on trippiness is though, so if you don't like such series, then I'll probably won't recommend. It's quite mild though. The other thing is Inga... he's like that obligatory annoying mascot character. Guess girls will fangirl over him/her/it or w/e the hell that person is.
Just watched Un-go episode 7 and holy... this series is amazing. I started off giving the 1st ep a 6 or 6.5/10 and it continued to get better and better. Was enjoying it quite a bit by episode 5 and by episode 7 (just over halfway) it's my second favourite series of the season after Fate/Zero now as Chihayafuru is turning less character driven and more game centric as of late. Well done mystery series is very rare in anime... I is pleasantly surprised.