A whole BGM replacement for GBVS based on SNK and KOF.
Replacement listed as below:

Beelzebub = The Devil of Incarnation ~ Neo Dio (NEO-GEO Battle Coliseum Arrange ver)
Charlotta = Let's Go to Seoul! - FATAL FURY 2 (Super Smash Bros. Ultimate remix)
Katalina = Queen (Rival Team) (KOF XI Arrange ver)
Djeeta = Magical Sky (ANOTHER WORLD TEAM BGM) (KOF XIV)
Ladiva = Sky Blue (MEXICO TEAM BGM) (KOX XIV)
Ferry = Fairy (Women Fighters Team) (KOF '98 Ultimate Match Arrange ver)
Lancelot vs Percival = New Order (Kusanagi & Yagami Team) (KOF XI Arrange ver)
Gran = Kurikinton - FATAL FURY 2 (Super Smash Bros. Ultimate remix)
Lancelot = Yappari ESAKA (JAPAN TEAM BGM) (KOF XIV)
Lowain = SLUM No.5 (American Sports Team) (KOF '98 Ultimate Match Arrange ver)
Metera = Blue Mary's BLUES (Blue Mary) (KOF '98 Ultimate Match Arrange ver)
Narmaya = Banquet of Nature - SAMURAI SHODOWN (Super Smash Bros. Ultimate remix)
(Zeta vs Vaseraga)Organization = KD-0079+ - KOF 2002 UM
Percival = Saxophone Under The Moon (YAGAMI TEAM BGM) (KOF XIV)
Same Character  = Gaia - SAMURAI SHODOWN (Super Smash Bros. Ultimate remix)
Soriz = IN SPITE OF ONE'S AGE (Master Team)(KOF '98 Ultimate Match Arrange ver)
Vaseraga = KDD-0063 - KOF XIII
Zeta = KD-SR (K' TEAM BGM) (KOX XIV)
Zooey = Hell or Heaven ~Goodman (NEO-GEO Battle Coliseum Arrange ver)

Extra from other series
Liberation Charge Attack = Period (Persona 4)
VS Screen = Order Select (KOF XI Arrange ver)
Character Select =Member Select 2 (KOF XIV)