Raikō Minamoto, also known as Minamoto no Raikō, is a character who appears in the Black Heian-kyo storyline of the anime New Getter Robo. The character draws on the legendary Heian-era general Minamoto no Yorimitsu, whose name was also read as Raikō and who was celebrated in folklore for defeating supernatural enemies such as the oni leader Shuten-dōji. In this version, however, she is a woman and a military commander who leads the armies of the Fujiwara clan in a war against the onmyōji Abe no Seimei, the figure who controls the oni and disrupts the peace of the capital. She is introduced commanding a giant wooden battleship from which she directs her forces against Seimei's oni within the oni capital.

In personality, she comes across as a decisive, combative, and fearless warrior. When the Getter pilot Ryoma Nagare appears before her, she immediately mistakes him for an oni and attacks him without hesitation, and the two engage in a fierce and evenly matched duel. Her willingness to strike first reflects the temperament of a commander at war. She is also shown to be courageous to the point of directness: after Seimei's attack sets her battleship ablaze, she abandons the ship and goes straight to confront the onmyōji himself, charging at him with her sword, only to be knocked back and left wounded on the ground, where Ryoma and Benkei later find her.

Her central motivation is to protect the capital from the oni and to destroy Abe no Seimei, whom she sees as the cause of the chaos. Her role in the story is that of a human leader resisting Seimei from within the oni-controlled world. Though she begins as an adversary to the visiting pilots because of a misunderstanding, her fight is directed against the same enemy the Getter team has come to face, and her encounter with them links the two conflicts. Her development is concentrated within this arc: she moves from commanding a desperate struggle from her flagship to mounting a personal assault on Seimei, and her defeat occurs just as the newly arrived Ryoma and Benkei reach the scene. Figures drawn from her legendary retinue, such as Watanabe no Tsuna and Sakata no Kintoki, appear alongside her in this setting.

In terms of abilities, Raikō is a skilled swordswoman who can hold her own in single combat against a fighter of Ryoma's caliber, and she is an able commander who leads troops from a large warship. She relies on conventional martial skill and military leadership rather than supernatural powers, meeting the oni threat through direct combat and the command of her forces.