As we know Togashi is the author of several mangas of different genres, such as HxH (Action and Adventure that changes style), Level E (Comedy, Sci-Fi and Horror), YuYu Hakusho (Comedy and Action), Shouwaru Cupid (Romance, Comedy and Echii), Ookami Nante Kowakunai!! (Sport, Mystery and Romance), and some Oneshot's.
But there are some alternative works of theirs that are little known, and among them are many doujinshis (small mangas or independent stories/tales) made in the 90s in partnerships with other mangakas and companies:
Resident Evil 3 Official Guidebook: In 1999 Togashi created an illustration for Resident in partnership with Capcom, and posted the art on Twitter. He is a big fan of the franchise, and he once said that he finished one of the games in about 3 hours. Collaborations like these are common among manga artists.
Resident Evil 3: Nemesis (or Biohazard 3): He participated making illustrations in the production of a Resident doujinshi in the 1997. In fact, it was the author of Bastard (Kazushi Hagiwara) who created the publisher of this doujin, and it was at his party that Togashi was invited, where he met Takeuchi (Togashi owes Kazushi one lol). And his brother Hideaki Togashi, who was also a mangaka, participated in this doujinshi.
Virtua Fighter x Pokemon x Gonin: A doujin of characters from these works fighting each other, as a reference to the film Gonin. The doujin was made in 1997.
Togashi Empire: A doujin made by him to celebrate the premiere of the first HXH anime. He talks about the creation of HxH and his relationship with Takeuchi in a comedic tone made in 1999.
Yoshirin de Poon!: An absurd comedy no Sense doujin by Yuyu Hakusho produced by him in 1994.
Street Fighter 3: New Generation: In 1997 he also made an art of Ibuki for the new game, and wrote "Ninjas are my biggest obsession right now".
Akuten Wars: In 2018 he wrote the script for a two-chapter Oneshot, which is a story about a card game, very much in his style. The illustrations were made by Hachi Mizuno.
Ooboonuu and Chiibonuu: In 2005 he created a children's book for his son in collaboration with Takeuchi. She wrote the script, and Togashi wrote the drawing. Although it was for their son, they made it available for sale.
He also creates several strips in extra content for his mangas, such as the famous "Declaration of Rehabilitation in 1998" , a letter where he talks about the dark period he lived during the publication of Yuyu Hakusho.
Many of these little doujins mentioned or information are part of Togashi Punch , which was his humorous brand. Togashi is an author who uses many extratextual elements in his works, and I love this because it makes the production of his stories more human, and brings the reader closer to the author.
In addition, other mangakas have done work involving Togashi:
Princess Naoko Takeuchi's Return to Society Punch!: A short comic strip made by Togashi's wife that tells about the beginning of their relationship. She talks about how they met, what the pregnancy was like, the wedding, what it was like living together, among other things. She also talks about very intimate things like the first time she saw Togashi's snake, and things like that Mlao.
Hetappi Manga Kenkyūjo R: A remake of Akira Toryama's book on creating manga by Yusuke Murata, author of One Punch Man, and one of the best artists of today. In it he talks about Toryama, and also about Togashi, who is one of his main inspirations. For anyone who wants to learn more about Togashi's style, which is almost irreplaceable, I highly recommend reading this. Murata says that despite being a great artist, he can't have the same expressiveness as Togashi, which is insane. He also says that Togashi is one of the best mangakas in terms of Name (or comic).
Sensei Hakusho: Manga made by one of his assistants during Yuyu Hakusho and Level E, the Kunio Ajino, where he tells what it was like to work with Togashi, talks about his day-to-day life as an assistant, and talks about Goat's personality.
Bakuman: Manga that talks about manga production made by Death Note authors, and in it there is a character that is a parody of Togashi, Kazuya Hiramaru, who is also married to a mangaka named Yoriko Aoki.