Although Fujioka is multilingual (fluent in Japanese, English, Cantonese, Standard Mandarin, Indonesian) and made his debut in a Chinese fashion show, he has clarified in some interviews and variety shows that his parents and grandparents are all Japanese,[4] who used to work or live in foreign countries.

[7] After graduating from Chiba Prefectural Funabashi High School, Fujioka majored in IT at a community college in Seattle, USA.

Fujioka has a wide range of hobbies such as Chinese martial arts, kickboxing, chess, basketball, skiing and taking pictures, and also likes composition and lyrics.

[2] The song "Kessen wa Kinyōbi" of Japanese band Dreams Come True is the first single CD he bought by himself.

[20] Dean Fujioka started his career as a model in Hong Kong's fashion scene in 2004 for both local and international designer brands.

Simultaneously with his career in fashion, he also embarked on various advertising campaigns, appearing in TV and print commercials for both local and multinational clients in the Asia pacific region.

[25] In 2007, Fujioka appeared as a talented pianist in the TV series Corner with Love with Barbie Shu and Show Lo.

He also appeared in Summer's Tail, his first film in Taiwan, with Bryant Chang, Enno Cheng, and Hannah Lin.

A year later, Fujioka appeared in the TV series Miss No Good with Rainie Yang and Will Pan, produced by Angie Chai.

In 2012, Fujioka appeared in the film Black & White Episode I: The Dawn of Assault, which was based on the popular Taiwanese TV series directed by Tsai Yueh-Hsun.

[37] and the TV movie The Noisy Street, The Silent Sea,[38] playing a variety of roles with distinctive personalities.

[40] In the same year, Fujioka released the download single "History Maker" [ja] which is used as the opening of the anime television series Yuri!!!

According to the top trending Google Search queries by year in 2016, he was ranked 5th in the world in the category "Musicians".

[45] He starred as an unfaithful man in the film Marriage[46] and released his first EP "Permanent Vacation" as its theme song.

[61][62] In January 2019, Fujioka starred in the TV movie Les Misérables: Owarinaki Tabiji with Arata Iura.

[64] In February, he made his debut as a DJ at a club event presented by Taku Takahashi, among other stars such as starRo, TJO, and YUC'e.

[68][69] In September, he appeared as the Executive Secretary to the Prime Minister in the film Hit Me Anyone One More Time directed by Koki Mitani.

[74][75] In November, in the omnibus film Angel Sign directed by manga artist Tsukasa Hojo, he co-starred with Nao Matsushita.

On this song, he collaborated with 福克斯 (FOX) which is a rapper and co-starred with him in the variety show 潮流合伙人 (FOURTRY) within the China's video streaming service iQIYI last year.

[108] In March, he appeared as Mori Arinori in the TV movie Tsuda Umeko: Osatsu ni Natta Ryūgakusei.

[112] In June, the film The Hound of the Baskervilles: Sherlock the Movie, a sequel to the TV series in which he starred in 2019, was also released.

A portion of the purchase price of the coffee will be used to support the activities of the Sumatran Orangutan Conservation Programme through The Orang Utan Regenwald GmbH.

[121] In December, he appeared as a guest at the opening ceremony of the event Identity V Japan League Fall The Play Offs & X'mas Fan Meeting "Christmas Night ni Kane ga Naru".

[129] Meanwhile, he collaborated with the Taiwanese band Accusefive on the song "Hare no Hi / Qíng Tīan", which was released for distribution in July.

He wrote new Japanese lyrics for "Finally (好不容易)", which was their smash hit as the ending song for the Netflix series Light the Night.

[130] The day after the release, he made a surprise appearance at their live tour AROUND THE NEW WORLD held at Kaohsiung Arena in Taiwan, to sing the song for the first time.

DEAN FUJIOKA", a song by Japanese hip hop group HONEST BOYZ® led by EXILE NAOTO, was released for distribution (he participated as a guest).

[137][138] In April, Thomas & Friends: The Mystery of Lookout Mountain, in which he participated as a guest voice actor for the dubbed in Japanese, was released.

[146] In September, he participated in his first outdoor music festival, Kaze to Rock Imonikai 2024 Imony Symphony "Furusato".