The Hollow Knight Fortnite collab will debut when the Item Shop resets on Wednesday, Oct. 7, at 8 p.m. EDT. You will then have access to all five items included in the collection. The main attraction is The Knight as a Sidekick. As with all new Sidekicks, players who purchase The Knight can progressively unlock a second style and Emotes. The Hollow Knight Fortnite bundle contains a Back Bling, Pickaxe, and a Banner Icon.