martial arts actor Ray Park. As the first boss character from The King of Fighters, the SNK staff created him to be one of the most difficult characters to defeat. His Omega Rugal form from 95 has been noted by the staff to be their favorite boss to the point they added him in the Dream Match titles. Publications for video games and other media have provided praise and criticism for Rugal's character. The concept for making Rugal in The King of Fighters '94 was to make "the mightiest (most violent) and most evil boss character ever". Despite the difficulties in defeating him, Rugal has become the boss character with the biggest number of appearances in series. In The King of Fighters XIV, he is one of the souls inside Verse until his resurrection at the end of the game via Verse's defeat. He returned as Omega Rugal in The King of Fighters XV as not only a free DLC character, but also a boss character as well in the game's "Boss Challenge" mode. Adelheid and Rose (Adel for short), along with his younger sister, , are the only known children of Rugal Bernstein. They reside in an airship called "Sky Noah". Adel is a boss character from The King of Fighters 2003, as well as a secret and mid-boss for The King of Fighters XI. They were added to the series to create an alternate story to the main plot. Despite sharing several physical and fighting traits with Rugal, Adelheid is an honorable fighter who exhibits good sportsmanship, even having a friendly conversation with Heidern, Rugal's mortal enemy. Rose, however, was developed to be extremely prideful and selfish, possessing her father's negative traits. At the end of The King of Fighters XI, Rose is manipulated by Botan, a member from the mysterious organization Those From the Past to use her in their plans, leading to the events of The King of Fighters XIII. Hakkesshu The Hakkesshu ( in the Japanese version) are a group formed by the eight most powerful followers of the god Orochi. The four top members are referred to as "Kings". Gaidel, the biological father of Leona, was also a member of the group, but when he refused Goenitz's offer to continue the Orochi's will, Goenitz manipulated Leona into killing Gaidel and the rest of her fellow villagers. The criminal Ryuji Yamazaki is part of the