This The Joker kertas dinding might contain
tanda, poster, teks, papan hitam, chalkboard, api, inferno, kebakaran, lidah-lidah api, anime, komik, manga, kartun, and buku komik.
credit: TheJokerBlogs - "The following recordings are for the expressed purpose of medical research and is the sole ownership of Gotham City's Arkham Asylum Psychiatric Rehabilitation Program staff and facilities. [...]"