I will never stop being amused by Symphogear's shows within the show like Denkou Keiji Ban or KaiketsuâUtazukin! (especially Utazukin considering how it was created in canon)
Like, this is Ban and Noire. There's a character called the Bag Snatching Mantis who appears in "episode 8" of the "show" that you see Kuriyo dressed as during the school festival in G but I don't think I've seen any art of him outside of this rough sketch (and the adorable plush of him that Yumi has in her bag in GX since according to the keywords she really likes this character)
Kuriyo's costume at least gives some idea of his colors though
And of course Utazukin which is a manga that got adapted into an anime and was...
--created by the government to cover up the existence of Symphogears after rumors about seeing girls and hearing songs in disaster areas started spreading (basically treating it like one of those movies/shows based on urban legends in order to make it seem even less believable)
And that's not anywhere close to everything about those, there are uh...several paragraphs about both in the keywords đ
As bit of a related side note, there's another magical girl series that Chris likes in XDU called Mofumofu-Tai Heart Pretty that seems to be similar to something like Precure. There's a Memoria where Miku tags along with Chris to a cheer screening for the movie (the audience full of nothing but little kids) but it never shows what it looks like so no pictures for this one