Card Trivia:Gishki Shadow
- This monster is wearing "Gishki Aquamirror" as its necklace.
- This card has a "Gishki" counterpart is "Gishki Vision".
- This card's appearance looks like "Gishki Vision".
- They both have the same effect to be used as the entire Tribute for "Gishki" Ritual Monsters.
- They both can also search for the the necessary cards needed to Ritual Summon.
- "Gishki Vision": Ritual Monster
- "Gishki Shadow": Ritual Spell Card
- This card has a "lswarm" counterpart, "Evilswarm Ketos".
- This card has an upgraded version, "Evigishki Soul Ogre".
- Given its name and artwork, this monster could be a reference to H.P. Lovecraft's "The Shadow over Innsmouth".