|This article lacks an official name. "Illusion Monster" is simply how it is referred to as, due to the popularity in the fandom or how its mentioned in-story.|
|First Appearance:||SSSS.GRIDMAN episode 1 "Awakening"|
|Affiliation:||Akane Shinjo (Master)|
The Illusion Monsters are kaiju that debuted in SSSS.GRIDMAN. They are things which only certain people, such as those in the Gridman Alliance, can see. They only appear when there are no other monsters present.
Subtitle: Poison Smoke Monster (毒煙怪獣 Doku Kemuri Kaijū)
These monsters were created beforehand and sent to rebuild the city after each monster attack orchestrated by Akane Shinjo, erasing the things and people she dislikes. They also use their sleeping gas to prevent people from knowing the true nature of the world Akane has shaped, making the Tsutsujidai train go in loops as if there was nothing outside the city.
When Yuta was being brought to the hospital by Rikka Takarada, he saw the image of a monster through the mist, towering over the city. However, despite it being clear to him, Rikka couldn't see it. It appeared again when Yuta was at school with Sho Utsumi. Multiple of these appear the next day and both Rikka and Sho are capable of seeing them, thanks to Junk's optimization. Anosillus the 2nd tells Yuta of their origins as a way of repaying her predecessor's debt.
Akane's final kaiju decapitated them all, bringing an end to the fog they emit. With that, the city resets stopped and people kept their memories of kaiju attacks and Gridman.
- Due to their body shape and discernible features, these monsters may actually be Venora. This is further reinforced with Anosillus the 2nd's 3D demonstration, but official sources have yet to further reveal their ties, though animator Shinji Nishikawa credits the monster as Venora in a drawing. In-series, Gridman calls them 'Poison Smoke kaiju', which is Venora's subtitle.
Powers and Abilities
- Gas: A sleeping gas that affects anyone trying to leave Tsutsujidai via the train. It also acts as a nerve agent that erases the memories of people. According to Anosillus the 2nd, they are ineffective when the target hears music.
- Invisibility: Unlike most kaiju that Akane created, they are completely invisible to the naked eye, except to the Gridman Alliance and Neon Genesis Junior High Students.