While Zacain and Sif share many similarities in design, Zacain is inspired by the legend of King Arthur and the mythical sword Excalibur. However, Game Freak likely gave From Software a little nod while designing Zacain. However, this is no more than a reference to the fan-favorite Dark Souls boss Sif the Wolf. Furthermore, the imagery of Wolves with swords is shown in multiple mythologies, such as the Iron Wolf in Lithuanian culture and Geri and Freki in Norse mythology.