I beat him on my first try with my Celestial Dragonling, Core Hound pup, and a rare Shrine fly. My dragonling was the only one that died, but he took out the eyeball first.
Core hound hits like a truck, he killed the tonk in no time (got a burn crit for over 1k O.o). Then the shrine fly took out the monkey with no trouble at all. They all got a hug afterwards. XD
Bag had a couple bandages and a fetch ball in it, but now that I know I can beat them, I'll just keep trying til I get my eye.