User blog comment:SpiderRolling/Character Art Help/@comment-3332136-20130629183805

They are, or at very least fangame protagonist concepts.

Hmm, the Earth person featured in Dreammarbleng. The bunny is from Mochi Nikki, a series of pics that didn't seem to build a fangame.

The rest seems to be fangame concepts.

Will source the fanart for Shidonoko.