From publisher blurb:
The Manual of Mutants & Monsters Caller in Darkness for Mutants & Masterminds Calls Out for You
This release of The Manual of Mutants & Monsters provides game stats on the Caller in Darkness, a "race" of mysterious robots that scour the universe to ruthlessly take and collect samples of other species, both sentient and otherwise. No one knows why they do this or if they serve some greater cause or master, but every civilization that has ever encountered these collectors knows to fear the fate they bring.
This product includes game statistics for the Caller in Darkness, as well as ideas regarding how to introduce it to your game. Can your heroes defeat what they cannot touch?