Additionally, this card has the same hair and pants color as "Kagemusha of the Blue Flame".
This monster's posture is also the mirror image of "Kagemusha of the Blue Flame".
Furthermore, both monsters are Level 2 EARTH attributes, and the Japanese name for "Kagemusha of the Blue Flame" is "Shien's Impostor".
This card, like the other Six Samurai, may also have been inspired by Akira Kurosawa's movie, "Kagemusha" , which is about a daimyo who finds a body double to impersonate him. The daimyo in the movie is inspired by Takeda Shingen, which sounds a little like Shien although uses different characters.
This card also shares a similar appearance to Kageningen, of whom is a Level 2 DARK monster using both a physical form, as well as a shadow form, adding to the element of Kagemusha possibly being Shadow of the Six Samurai - Shien.
The Spanish STOR lore of this card had the "instead" word translated as "en cambio" instead of "en su lugar". This was corrected in further printings. A similar issue happened in early prints of the card "Macro Cosmos".