Gromm plays a major part in the Dark Brotherhood quest "Accidents Happen," where Baelin's death is required. He will patrol around the manor and turn hostile if he spots the Hero. If the Hero enters Baenlin's house prior to this quest and kills Gromm (or if they flee his attack, and he is killed by the guards), the bonus criteria for Accidents Happen cannot be met, as he will not be present.
"The Master doesn't like visitors. Leave this house. Now. If you're still here in twenty seconds I will be forced to crush you."
- "For your sake, you'd better be on your way to the door."
This section contains bugs related to Gromm. Before adding a bug to this list, consider the following:
- Upon completion of the quest Accidents Happen, Gromm will be seen sitting around Olav's Tap and Tack. If Gromm is killed (one shot or not), his body will not drop, but instead disappear completely. His murder will then become unwitnessed and no bounty will be received.
- After the quest "Accidents Happen," when Gromm goes to Olav's Tap and Tack he may attack everyone in the inn.
- During the quest "Accidents Happen," he may kill Baenlin on his own for no apparent reason.