The Donovan set is a special Cloak, which is unlocked by collecting all Red Skulls in the Specter of Torment campaign. It takes the appearance of Donovan but more colored. It also replaces Specter Knight's scythe with the sword he uses when he was alive. With it, the Caltrops are unlocked as well.
- Upon collecting all of the Red Skulls, Specter Knight talks to Red who takes them both to where Specter Knight fell after his second flashback and became The Enchantress' servant. Red gives Specter Knight his old set, showing that his Caltrops and armor were left once Specter Knight was resurrected.
- Specter Knight also shows extreme discomfort upon seeing the area, as his place of 'death' was unknown to Red at the time.
- If the "Cold Shoulder" upgrade is unlocked, every second time you perform the "Cold Shoulder" Specter Knight will do a dance, similar to Plague Knight.