Temjin, from Art of Fighting 2, and Mars People, from Metal Slug 2, make a cameo appearance in the "Friendly Fight" ending.

The Art of Fighting ending, which was a continuation from the ending from The King of Fighters XIV, features Khushnood from Garou: Mark of the Wolves. However, his name changed to Marco in this ending, which was his original name in the Japanese version of Garou: Mark of the Wolves. This was likely due to The King of Fighters XIV's director, Yasuyuki Oda, and art director, Nobuyuki Kuroki, asking on a livestream with SNK community manager KrispyKaiser if the fans would like his original name in future games. The chat overwhelmingly preferred the name Marco.