Possible Clues:

• Legend is on edge and it's not a good look?
• Reaper's descriptor
• Cheerless and gloomy
• One of two story-telling brothers said to be gloomy
• A lot of dirt is ghastly
• Ghastly ingrained dirt finally wiped
• Humorless
• Grave, serious
• Formidable leader in government on border
• Unrelentingly harsh