|Area of Operations||Worldwide|
|Enemies With||No one specifically|
|Affiliated With||Regular Army, Rebel Army|
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"
The first units in this group appeared during the "the King of Fighters 20th year celebration event". More were added over subsequent updates, until enough existed to group them off into their own faction - eventually a KOF-themed zone was added to the world map (using music from their games). Repeated plays there eventually uncover an invitation, leading to a hidden stage where Rugal (the sole boss-tier unit of the faction) can be unlocked for purchase.
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.
Whip and Heidern is the only KOF unit so far that make their way into Metal Slug Attack. As no KOF faction currently exists in that game, They were currently assigned as Regular Army. and also Featured in Extra Ops, complete with their own side stories.