Maruo graduated from junior high school in March 1972 but dropped out of senior high school. At the age of 15, he moved to Tokyo and began working for a bookbinder. At 17, he made his first manga submission to Weekly Shōnen Jump, but it was considered by the editors to be too graphic for the magazine's format and was subsequently rejected. Maruo temporarily removed himself from manga until November 1980 when he made his official debut as a manga artist in Ribon no Kishi (リボンの騎士) at the age of 24. It was at this stage that the young artist was finally able to pursue his artistic vision without such stringent restrictions over his work’s visual content. Two years later, his first stand-alone anthology, Barairo no Kaibutsu (薔薇色の怪物; Rose Colored Monster) was published.
Maruo was a frequent contributor to the underground manga magazine Garo (ガロ).
Like many manga artists, Maruo sometimes makes cameo appearances in his own stories. When photographed, he seldom appears without his trademark sunglasses.
Though most prominently known for his work as a manga artist, Maruo has also produced illustrations for concert posters; CD jackets; magazines; novels; and various other media. Some of his characters have been made into figures as well.
Though relatively few of Maruo's manga have been published outside Japan, his work enjoys an international cult following.
His book Shōjo Tsubaki (aka Mr. Arashi's Amazing Freak Show) has been adapted into an animated film (Midori) by Hiroshi Harada with a soundtrack by J.A. Seazer, but it has received very little release. In Europe and North America, it was marketed under the name Midori, after the main character. It was recently released on DVD in France by Cinemalta (the DVD includes English subtitles).
Many of Maruo's illustrations depict graphic sex and violence and are therefore referred to as contemporary muzan-e (a subset of Japanese ukiyo-e depicting violence or other atrocities.) Maruo himself featured in a 1988 book on the subject with fellow artist Kazuichi Hanawa entitled Bloody Ukiyo-e (江戸昭和競作無惨絵英名二十八衆句), presenting their own contemporary works alongside the traditional prints of Yoshitoshi and Yoshiiku.
Maruo's nightmarish manga fall into the Japanese category of "erotic grotesque" (エログロ; "ero-guro"). The stories often take place in the early years of Showa Era Japan. Maruo also has a fascination with human oddities, deformities, birth defects, and "circus freaks." Many such characters figure prominently in his stories and are sometimes the primary subjects of his illustrations. Two of his most recent works are adaptations of stories by Edogawa Rampo, such as "The Strange Tale of Panorama Island" and "The Caterpillar". An English translation of The Strange Tale of Panorama Island work was published by Last Gasp in July 2013.
John Zorn's Naked City
- 薔薇色ノ怪物 (Barairo no Kaibutsu)
- 夢のQ-SAKU (Yume no Q-SAKU)
- 少女椿 (Shōjo Tsubaki)
- キンランドンス (Kinrandonsu)
- 丸尾末広ONLY YOU (maruo suehiro ONLY YOU)
- 1985, December 25
- パラノイア・スター (Paranoia Star)
- 江戸昭和競作無惨絵英名二十八衆句 (Edo Shōwa Kyōsaku Muzan-e Eimei Nijūhasshūku (Bloody Ukiyo-e in 1866 & 1988))
- 1988, January 20
- 丸尾地獄 (Maruo Jigoku)
- 1983, November 25
- 2001, October 2
- 国立少年 (ナショナルキッド) (Kokuritsu Shōnen (National Kid))
- 犬神博士 (Inugami Hakase)
- serialized in Young Champion
- 1994, September 25
- 風の魔転郎 (Kaze no Matenrō)
- 丸尾地獄2 (Maruo Jigoku 2)
- 1995 – Seirindo
- 2001 December 12 – Seirindo
- 丸尾画報1 (MARUOGRAPH1) (Maruo Gahō 1)
- 1996, September 1 – トレヴィル
- 丸尾画報2 (MARUOGRAPH2) (Maruo Gahō 2)
- 1996, November 1 – トレヴィル
- ギチギチくん (Gichigichi-kun)
- 月的愛人LUNATIC LOVER'S
- 1997, February 25 – Seirindo
- 1999, December 20 – Seirindo
- マルヲグラフ (Maruograph)
- 1999, March 1 – パロマ舎
- 新ナショナルキッド (NEW NATIONAL KID) (Shin National Kid)
- 笑う吸血鬼 (Warau Kyūketsuki (Laughing Vampire))
- マルヲボックス 特装版 (Maruo Box)
- 2000, August 1 – パロマ舎 (limited edition of 50)
- マルヲボックス 普及版 (Maruo Box)
- 2000, August 1 – パロマ舎 (limited edition of 100)
- 新世紀ＳＭ画報 (Shinseiki SM Gahō)
- 2000, August 20 – 朝日ソノラマ
- ハライソ 笑う吸血鬼２ (Paraiso: Warau Kyūketsuki 2)
- 丸尾画報EX1 (MARUOGRAPH EX 1) (Maruo Gahō EX 1)
- 丸尾画報EX2 (MARUOGRAPH EX 2) (Maruo Gahō EX 2)
- The Strange Tale of Panorama Island (パノラマ島綺譚, Panorama-tō Kidan)
- Shōjo Tsubaki (少女椿) published by Blast Books. ISBN 0-922233-06-3
- Ultra-Gash Inferno (selected short works) published by Creation Books. ISBN 1-84068-039-3
- Comics Underground Japan (anthology including Maruo's story "Planet of the Jap") published by Blast Books. ISBN 0-922233-16-0
- The Strange Tale of Panorama Island (パノラマ島綺譚) published by Last Gasp. ISBN 978-0867197778
- How to Rake Leaves published by Stone Bridge Press. ISBN 1-880656-07-8
- How to Take a Japanese Bath published by Stone Bridge Press. ISBN 0-9628137-9-6
Figures and toys
- 人間豹と少年探偵 (ningenhyō to shōnen tantei) The Leopard-man and the Young Detectives produced by Eastpress (イーストプレス) of Japan
- 少女椿 (shōjo midori) Young Girl Midori 18 cm figure produced by Artstorm (アート・ストーム) of Japan
- Cha, Kai-ming (2009-08-24). "Last Gasp Finds Beauty in The Strange Tale of Panorama Island". Publishers Weekly. Archived from the original on September 5, 2009. Retrieved 2015-11-17.
- Inc, DIGITALIO. "笑う吸血鬼（漫画）". マンガペディア (in Japanese). Retrieved 2022-11-16.
- Suehiro Maruo's official website
- Blast Books – English publisher of Maruo's manga
- Creation Books – English publisher of Maruo's manga
- Le Lézard Noir – French publisher of Maruo's manga
- Coconino Press – Italian publisher of Maruo's manga
- Editions Treville – Japanese publisher of Maruograph artbooks
- Eastpress Toy – Japanese manufacturer of Maruo's action figure
- Artstorm – Japanese manufacturer of Maruo's action figure
- Suehiro Maruo Shrine fan site
- Article on the animated film of Shōjo Tsubaki
- Suehiro Maruo on FuckedUpArt.com