K' lived a normal life happily as a child with his sister, Seirah. However, they were captured one by NESTS, a crime syndicate who dealt with drugs, genetics, robotics and biotechnology. K' was kept under NESTS and trained to become some sort of weapon. In 1998, K' was made to participate in the Kusanagi cloning program. As a result of being infused with Kyo Kusanagi's DNA, he was given the power of pyrokinesis. During the program, K's memory was altered and he was made to believe that he was Krizalid's clone. Any of his real past memories have either been erased by NESTS, forgotten, or repressed.
Under the orders of NESTS, he and Maxima joined the King of Fighters 99 tournament with Benimaru Nikaido and Shingo Yabuki. The team made it to the finals and are sent to a place where Krizalid waits for them. He poses as the tournament's host and fights them to gather their battle data energy. He hoped to use the data to activate the thousands of countless Kyo clones around the globe. However, K' defeats him and the team learns that Krizalid was merely a pawn for NESTS. Shortly afterward, Krizalid is executed by his superior. When the base collapses, K' and Maxima are separated from their team and on the run by the Ikari squad. They survive the ambush and continue their resistance by leaving the organization. K's personal reason for doing so is find a way to regain his lost memories.
In 2000, K' and Maxima were joined by mercenaries Vanessa and Ramon. They entered the tournament to discover NESTS scheme, but Vanessa and Ramon were there to capture K' and Maxima at the end of the tournament, since they were working for Ling and Heidern. Their team makes it to the finals where they encounter Zero. Although K' defeats the traitor, they are unable to prevent the Zero Cannon from firing. Little did they know, Kula Diamond and her team destroyed it and saved the world from further damage. K' and Maxima are once again separated from their teammates after the tournament's climax. Whip finds them, reveals her relation to K', and joins their resistance effort.
They spend the remainder of the year 2000 hunting down NESTS's bases around the world. Though they have stumped some of the syndicate's plans, none of the bases were the main headquarters they were hoping for. K', Maxima and Whip enter the 2001 tournament with Lin, who tracked their movements in his personal hunt for Ron. Once his team made it to the finals, they are lifted into a spaceship and are confronted by the real Zero. He reveals to the frustrated K' that they are on their way to the syndicate's main headquarters and will meet the real leader to NESTS. Once they reach the satellite, they meet Nests, Misty, and Igniz. Although Nests requests their neutral cooperation, Igniz quickly killed him. There, they learn that they are nothing but cyborgs (or clones) purely created for Igniz's personal entertainment. K's team faces the villain and defeats him, which motivates Igniz to blow the satellite up to earth. It harmlessly falls in the ocean (which is actually thanks to Ron) with most of its passengers safe. As he emerged from the wreck, K' forms an alliance with Kula and Diana. Both of them want to make their own future and make up for the time lost in their lives.
In 2003, Chin Gentsai visits K' and Maxima and requests them to enter the tournament. Chin, feeling a dark wave of energy around KOF that year, wants them take his place in investigating it. K', Maxima and Whip made it to the finals, where they face Mukai. K' defeats him but is troubled by his taunts about regaining his memories as well as reaching his true potential. Mukai's words continue to haunt him in the next tournament, leading K' to wonder if he can surpass his fate as "the second Kusanagi flame". After the XI tournament ended, K' and his teammates were invited by Heidern to attend a lecture about the mysterious group called Those from the Past. Heidern said he had Magaki's body, but they were attacked by two children who took the body away. K' definitely did not want to enter the KOF XIII and is offended when Chin calls him once more at his apartment with Maxima. K' is forced to enter against his own will upon discovering that Chin and Kula are in the newest tournament,
K' is very serious, but also very easy to enrage. He starts to treat Whip as a big sister and Kula as a little sister. He frequently calls Maxima names like "stupid", "idiot", etc., however he actually trusts his partner's reliability. He is barely polite and is always gruff, even to those close to him. As K' usually expresses his concerns in a "tough guy" manner, Maxima jokingly calls him dishonest or stiff. He sees Kyo as a rival and wants to prove he is better than him, not as only a clone.
Full name: K' (pronounced Kay-dash)
Birth date: Unknown; seems to be 16~18
Height: 183cm (5'11")
Weight: 65kg (143 lbs)
- Kyo Kusanagi (half cloned, has his DNA)
- Krizalid (clone)
- Whip (older sister)
- Nameless (has K's DNA)
Dislikes: The King of Fighters tournaments, sweets
Favourite food: Beef Jerky
Forte in sports: None (he doesn't like to exercise)
- Pyrokinesis - K' can control fire.
- Create Fire - K' can control fire out of nowhere.
- Fire Projectile - K' can throw fire balls.
- Fire Attacks - K' can add damage to his normal attacks with fire.
- Explosion - K' can create an explosion by touching his enemy.
- Translocation - K' can translocate himself.
Pure Violence, though it has several similarities with Bruce Lee's Jeet Kune Do. A few instances is where K' uses the famous 1 Inch Punch, Flying Kick and even the JKD side kick that Lee uses.