Jackal is confirmed as a minor character within *Fuma no Kojirou: Seiken Sensou-hen*. Concrete details regarding his background, specific role, character development, or potential appearances in related media like movies, OVAs, or spin-offs remain undocumented.

References to other characters or entities named "Jackal" originate from distinct franchises and media, including *Fairy Tail*, *Hokuto no Ken*, *The Ultraman Vs Jackal*, the TV series *The Day of the Jackal*, and the company Jackal Media Ltd. These are unrelated to the *Fuma no Kojirou* character. Consequently, information about Jackal's background story, development, or significance within the *Fuma no Kojirou* franchise itself is unavailable.