Muttsibs

Slen and Mutt, not surprisingly. Siblings, again, not surprisingly. They are English and insane, not neccessarily in that order.

They live with Piper.

Mutt and Slen also claim various other unrelated individuals as their siblings or cousins.

It is not yet known what these unfortunate beasties think of this.

The Muttsibs have, however, only one known cyberMommy.