Big Man is the Deep Cut member shown with bandages on his fins in Splatoon Raiders. The manta-ray member receives a slightly altered design for the spin-off, including a browner skin tone and bandages on his fins.
Big Man is the group’s manta ray, while Shiver is an Octoling and Frye is an Inkling. His broad fins are part of his distinctive silhouette, so the bandages are a visible Raiders-specific design detail rather than a feature associated with the other two members.
The change accompanies other redesigns for the island adventure: Shiver and Frye wear fishing gear instead of their usual masks. These updates can make the trio look unfamiliar at first, but the bandaged fins identify Big Man clearly.