I think that was me. I remember coming across a strange looking raidboss with such low health. I was like what the fuck is that thing. I use 1 raid point and a a 5 star team instead of a 4 star team because I thought it was pretty strong.
What is that thing? Is it more valuable than a event raid boss?
I usually ignore non event raid bosses during raid boss events. I was curious about that blue thing.