The Riddler is the next route to the left of The Joker. Climb up a slab and veer right past a cruxy move followed by hard moves up a steep left facing corner to a stance. The final bulge is steep and enjoyable. Worth doing if all the other routes are occupied. As Fred Knapp states in his best-of guide, this route climbs like an Eldo route except for the seven closely spaced bolts.