Kilton wants to add a Horriblin sculpture to his collection and asks you to bring a picture of one.
Quest Location
You can start this quest by talking to Kilton in Tarrey Town after you complete A Monstrous Collection I.
Photograph a Horriblin
If you have completed Presenting: Sensor +!, you can set the sensor to search for Horriblins if you have already added it to the Compendium and you no longer have a picture. Horriblins can be found in caves, and in the Eldin Canyon Depths.
Quest Reward
Kilton gives you Sneaky Monster Soup and a Monster Extract.