WTF is going on with Ikaruga's face in the first card? I'd say she's wearing a mask or something, like Yomi, but it don't look like it, though.
Yes, it's her her PK kamen mask. She does a charity tokusatsu show together with Yomi for the slums children in Burst. It was referenced in several manga (she uses this mask in the Crimson Girls manga despite the lack of the Ikaruga/Yomi backstory in it) as well as Shinovi Versus.