From publisher blurb:
These pdfs follow a format similar to that found in the popular Behind the Spells series (also presented by Tricky Owlbear Publishing) so chances are good that, if you enjoy that series, this one will also strike your fancy. Each issue is narrated by Jadrin Nelv, monk of the Order of the Sacred Branch. Jadrin schools novice monks in the ways of the multiverse's creatures and we, the readers, get to listen in. Whether you're a player or a GM, you will find something of use within these pages.
BtM: Roper includes many character advantages, six new monster variants, and three new items!