In Mapleshade's Vengeance, Sloefur, alongside Ravenwing of ThunderClan and Larkwing of WindClan, are visiting the the Moonstone, right near WindClan's territory. After Mapleshade ambushes and murders Ravenwing, Larkwing cries out and asks Sloefur what happened. He grunts, and, bending down and sniffing at his body, Sloefur announces that Ravenwing is dead. Larkwing and Sloefur carry Ravenwing's body outside of the Moonstone, and create a memorial for him at his burial site.
- Mapleshade's Vengeance (First appearance)