This is one of the episodes in season 3 that introduces a new member


The pups get a distress call from a unknown rescuee, who turns out to be Ryder's long lost twin brother; Ranger! And now, a new member of D.E.M.I.S.E wants his head on a silver plater! Can the pups protect Ranger?!


(Title card with Monty and a skull mask on it)

Monty: Pups and the Sibling Rivalry!

(The epsode starts in D.E.M.I.S.E's Crystal Castle)