Heidern in The King of Fighters 2001. Illustration by Nona
Full nameUnknown (Heidern is a codename)
BirthdateSeptember 1 (1989 in Metal Slug); 42 years old (KoF '94), 43 years old (KoF series)
Height192 cm (6'3")
Weight90 kg (198 lbs)
Blood typeB
Family/RelativesSandra and Clara (wife and daughter, deceased), Leona (adoptive daughter)
Job/OccupationIkari Warriors Commander
LikesPhotograph of his family
HobbiesCollecting metal figurines, fishing
Favorite foodBlack beer, intestinal sausage
Forte in sportsHunting
Fighting styleMartial arts + self taught assassination techniques

Heidern (ハイデルン, Haiderun) is a character in The King of Fighters series who debuted as a playable character in The King of Fighters '94 in the Brazil Team (later known as the Ikari Team), along with Ralf Jones and Clark Still. Heidern is the commander of the Ikari Warriors, and issues orders to his adopted daughter Leona and his best soldiers: Clark Still, Whip, and Ralf Jones. He is also known as the General of the Soldiers of Fortune.

He was conceptualized to be a "cold-blooded killing machine", but his designer grew attached to Heidern and gave him a tragic past. His namesake is a character from the anime, Space Battleship Yamato. His eccentric and uncommon fighting style surprised some of the staff, and they humorously wondered if they should add a supernatural quality in his character history. Toyohisa Tanabe states that Heidern was added to be the "particularly strong" character at the time of his debut.


Eight years prior to The King of Fighters '94 tournament, a 34 year old Heidern was just promoted to his current rank for his exceptional proficiency in martial arts and strategy. The event took place at a top-secret base in Brazil and his wife and daughter were present for the ceremony. Rugal Bernstein, who caught wind of Heidern's high marks, stormed the base when he was away and killed fifty secret service officers on his arrival. When Heidern hurried back from his duties, Rugal deprived him of his right eye and deemed him unfit to be a part of his collection. Instead, he murdered Heidern's wife and child. Disgraced and alone, he developed his own fighting style and mercenary unit, the Ikari Warriors. Since then, he pursued Rugal to avenge his loved ones' deaths.

Sometime before the King of Fighters tournaments, he found Leona as the last survivor of a destroyed village. The girl was amnesiac and Heidern adopted her to care for her. He originally forbid her to partake in any training yet became lenient due to her inclinations on the matter. His refusal to give her a formal rank is his way of protecting her from some of the dangers on the battlefield.

Beginning in The King of Fighters '96, he assigns Leona to take his place in the tournaments while he issues orders from the sidelines. He continues to play a major part in one of the series's story arcs, the NESTS Saga, since the Ikari Warriors are trying to destroy the NESTS group. He continues this role with the incidents surrounding the mysterious group known as Those From the Past. When Leona experiences the Riot of the Blood after the 2003 tournament, he decides to pull her out of the following one and stay by her side while she recovers. After hearing Ralf and Clark's personal assessment of Leona, he lets his adopted daughter enter the tournament once more. In the end of KOF XI, the Ikari Team managed to secure Magaki's corpse and intended to analyze it, but the cruise they were on got invaded by Shroom and Rimello. The duo took Magaki's corpse, and Shroom also stole Heidern's eye patch and began to wear it as an insult and proof of his ability. Heidern orders the team to investigate whatever role Those from the Past and Rose Bernstein have in the KoF XIII tournament.


Very calm and silent, Heidern's personality was built because of the trauma of losing his eye and his family to Rugal. Although he hides his emotions through a veil of professionalism, he cares deeply for all of his subordinates, especially for Leona.

Heidern is very strategic, especially when trying to stop a major threat. Apart from Ralf, Clark and Whip, he hires mercenaries and free agents to expedite work, as he is seen assigning missions to Vanessa, Seth, Ramon, Blue Mary and others.

Heidern is not above accepting help from others, even accepting the help and intel contribution of Adelheid Bernstein, the son of his enemy, the late Rugal Bernstein.


  • Slashing Hands - Heidern's hands can cut and pierce as if they were knives.
  • Cutting Aura - Aside of his slashing hands power, Heidern can create a cutting aura around his arms.
  • Cutting Projectile - Heidern can send a cutting/piercing projectile flying with his hands.
  • Absorb Life - By piercing his hands in his enemy's body, Heidern can absorb his or her life-energy and refill his own.

Fighting StyleEdit

Heidern employs his self-made fighting style. Said fighting style is a striking martial art with emphasis on his cutting hand strikes. He is the master of his own brutal self-made martial art, involving cutting with the use of bladed gloves, which seem to conceal explosives and a form of energy generator (used for his signature attack, Storm Bringer, which is a reference to the famous Stormbringer sword).

In KOF 2001, he has been turned into a command-based character instead of his usual charge-based moves. This was corrected in his appearance in KOF2002 UM, where he reverts to his charge-based commands.


  • Jungle Bouncer - The King of Fighters '94
  • Desert Requiem - The King of Fighters '95, The King of Fighters '98: Ultimate Match (when teamed with Ralf and Clark)
  • In Spite of One's Age - The King of Fighters '98
  • My Whip - The King of Fighters 2001
  • In Spite of One’s Age ~Ver.Immortal~ - The King of Fighters 2002 Unlimited Match

Voice actorsEdit

Game AppearancesEdit

Mobile AppearancesEdit

Cameo AppearancesEdit

Anime AppearancesEdit

See alsoEdit


  • Heidern has also used the codename Bechstein in the past. Adelheid also gives him the nickname Heidi, which is a reference to the German novel character.


Heiderncfc1 Heiderncfc2Heidern


HeidernMSD Heidern94 Heidern98 Heidern2001


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