Merin is involved in the quest Fool's Gold.
Yevhen, a dwarven merchant, desperately asks Hawke to rescue his three sons who have gone down into the Deep Roads, by themselves, in search of treasure. Once down there, Hawke will find Yevhen's oldest son, Emrys, sitting in front of a locked door. He will explain that his younger brother, Iwan, locked the youngest brother, Merin, in a room full of darkspawn before running off to find the treasure. Hawke then tells Emrys to go back to his father and must now choose which brother to save. If Hawke goes around the locked door and goes to the room Merin is locked in, Hawke and company must help him fight off a small troop of darkspawn. This act will save Merin who will then go back to his father. However, doing this will result in Iwan's death. Alternatively, Hawke can by-pass Merin's tomb and run straight to Iwan. Helping Iwan fight off his darkspawn will result in Merin's death.If Merin survives he will express a new respect for the challenges the dwarves of Orzammar face in battling darkspawn every day, as well as a desire to not sit idly by while those dwarves endure such difficulties.
- Merin was intended to show up in a cutscene along with Temmerin Glavonak in which he mentions that he joined the Grey Wardens. However this was removed from the game and is considered as cut content.