Motoki Takagi is a Japanese voice actor born on October 4, 1980, in Kanagawa Prefecture. He is affiliated with the talent agency I'm Enterprise. Takagi has been active in the voice acting industry since his debut around 1999. His path to this career was inspired by hearing the voice actress Megumi Hayashibara on the radio, which led him to enroll in the Japan Narration Acting Institute to study from scratch.

Takagi's career encompasses a wide range of roles in television animation, video games, drama CDs, and stage performances. In his early years, he provided voices for characters such as the young Miroku in Inuyasha in 2003 and continued with roles in series like Futakoi and The Law of Ueki. He gained further recognition for leading roles in the mid-2000s, including Renji Asō in the acclaimed series ef: a tale of memories and its sequel ef: a tale of melodies., as well as Raki in Claymore and Jonah Matsuka in Toward the Terra.

Throughout the 2010s, his filmography continued to expand with diverse parts. He voiced characters such as Mamoru Itō in From the New World, Yuri Kamanosuke in Brave10 and Mushibugyō, Isaac Morton in Devils and Realist, and Hong Kong in the Hetalia franchise. In the Hunter x Hunter (2011) series, he voiced both Sedokan and the ant Cheetu. His work also includes roles in major space opera franchises, playing Tōru Hoshina in Star Blazers 2199 and its sequel Uchū Senkan Yamato 2205: Aratanaru Tabidachi.

Beyond anime, Takagi is a prolific voice actor in video games. He is known for his long-running role as the Hammer Bro and its variations in numerous installments of the Mario franchise, including Mario Party and Super Mario series. He also voiced Caius Qualls in Tales of the Tempest and other Tales of games, and Alexander Pasternak in Apocripha/0. In line with the user's query, he is credited as the voice of Furusato in The Thousand Noble Musketeers and Mōri Tōshirō in Tōken Ranbu. He also played Emu in the Vie Durant series, Inubashiri in Zombie-Loan, Uruno in Damekko Dōbutsu, and Mori Arty in Tantei Opera Milky Holmes Dai-Ni-Maku. In tokusatsu, he provided the voice for the character Wunjet in an episode of Uchu Sentai Kyuranger.

In addition to on-screen roles, Takagi has been highly active in radio. He hosted programs such as VOICE CREW and MYSTIC OPERATION COMPANY with fellow voice actor Tatsuya Suzuki. His work in drama CDs is extensive, spanning many genres and including roles like Finnian in the first CD version of Black Butler. He is also a stage performer, having appeared in several musicals and plays. Takagi is known to be skilled in kendo, holding a second-degree black belt, as well as jazz dance and festival drumming.