Feldus SparCanonLegendsInfinities Feldus Spar was introduced in Brotherhood, a 2022 novel written by Mike Chen. Behind the scenes Feldus Spar was introduced in Brotherhood, a 2022 novel written by Mike Chen. AppearancesBrotherhood (First appearance, simultaneous with audiobook) (Unknown)Unknown UnknownNoneBrotherhood audiobook (Unknown)Unknown UnknownNone