The King of Fighters Team (also known as The KOF Team) makes up the final faction added to Metal Slug Defense. Most of their members hail from SNK's famous fighting game franchise, "The King of Fighters" While they were featured in KOF titles before any Metal Slug-related games, Leona, Ralf, and Clark remain as Regular Army units for the purposes of Metal Slug Defense / Metal Slug Attack. Unlike the other KOF team members (who use art unique to the mobile games), their sprites are based on their appearances in Metal Slug 6 / 7 / XX.