Hitoshi Horimoto is a Japanese voice actor born on January 27, 1961, in Osaka Prefecture. He is affiliated with the talent agency 81 Produce. His career began in the 1980s, and he has been active in the industry for several decades. In 1993, he became a member of the theatre company Dramatic Company.

Horimoto's voice acting work is extensive and spans a variety of media, including television anime, original video animations (OVA), and foreign film dubbing. He has played numerous supporting and guest roles across many long-running and popular series. Notable television anime roles include the营业超人 (businessman) in Crayon Shin-chan, a coroner and later Matsudai Umekichi in Case Closed (名探偵コナン), Kaoru Hayashibara in Cutie Honey Flash, and a courier ninja in Naruto. He also voiced Deramon in Digimon Frontier and provided voices for several characters in the anime adaptation of Gintama.

In addition to anime, Horimoto has a significant body of work in OVAs and special effects television (tokusatsu). His OVA roles include several of the parts specified in the query, such as Ryūichi Sakagami in Naniwa Kin'yū Den Minami no Tei, Tsubakurō in San-chōme no Tama: Onegai! Momo-chan o Sagashite!!, Tamotsu Kanda in Anoko ni 1000%, and Ken'ichirō Takamura in Midoriyama Kōkō Kōshien-hen. He is also credited with the role of Mamoru Kawada (adult) in Kattobase! Dreamers ―Carp Tanjō Monogatari―. His work in tokusatsu includes voicing the Anglerfish Nezire in Denji Sentai Megaranger, the Hedgehog Road / Ericius Liquor in Kamen Rider Agito, and the Dancing Ninja Higenamazukin in Ninpuu Sentai Hurricaneger. He also participated in the radio drama Gaia Gear, voicing the character Michel Eken.

Throughout his career, Horimoto has frequently contributed to projects produced by Sunrise, such as Yoroiden Samurai Troopers and Mobile Suit Gundam, as well as numerous works affiliated with his agency, 81 Produce. His performances are characterized by a wide vocal range, allowing him to portray diverse characters, from严肃 officials to comedic villains, demonstrating his versatility and experience as a character actor in the Japanese voice acting industry.