2006-2014: Early appearances and pre-debut activities Lee Chan trained at his father's dance academy, whose dance crew, IS Crew, traveled nationwide for dance competitions. He attended the Jeonju Youth Dance Competition and won the grand prize. He was cast there by a Pledis representative. Before joining Pledis Entertainment, Lee Chan appeared on SBS's
Live Today 1 and
Truth Game in 2006, later appeared on KBS's
Show Power Video, and auditioned on MBC's
Star Audition: The Great Birth 2 in 2011. Lee Chan joined
Pledis Entertainment in 2012 for training in singing and dancing. As a trainee, he was a part of
Seventeen TV from its inception, an online reality show that introduced Pledis' trainees and showed potential members of the boy group
Seventeen before their official debut. The show was broadcast periodically on
Ustream, where the trainees showed themselves training, singing, creating choreographies and playing games. The online show also included participation in concerts, titled
Like Seventeen.
2015–present: Seventeen and solo activities In 2015, Dino debuted as a member of the South Korean boy group
Seventeen with the
extended play 17 Carat on May 26. In 2017, following his graduation from high school, Dino released his first solo song, "0 (Zero)", on
SoundCloud. It was written by himself and composed by
Bumzu. At Seventeen's 2021 Power of Love online concert, Dino debuted his third solo song, "Last Order". In June 2022, he released a digital song named "High-Five", written by himself and produced alongside Prismfilter's Hey Farmer. In 2023, Dino and bandmate
Jeonghan were cast in
MBC every1's reality show
Magic Lamp () alongside
Kim Jae-joong,
Kang Hui, Lee Joo-ahn, Junpi, and Tan. In August 2023, alongside bandmates DK and
Joshua, Dino was featured on
New Kids On The Block's remix to their 2008 song "
Dirty Dancing", released as a part of a commemoration of the 15th anniversary of the album
The Blocks release. In October 2023, Dino released his first OST song, participating in the soundtrack for television series
Castaway Diva with the song "Icarus". On November 17, Pledis announced that Dino would be releasing his first solo song to streaming platforms, titled "Wait". It was released November 27. At the
38th Golden Disc Awards, Dino performed "
Fighting" with
BSS as "Pi Cheol-in", a signature middle-aged character frequently invoked by him in Seventeen's content. In January 2024, Dino was announced as the new presenter of
Tokyo FM's
School of Lock program, a role previously held by his bandmate Jeonghan. In July 2025, he was invited to sing the official anthem of the
2025 Esports World Cup alongside American rapper
Duckwrth and American metalcore band
The Word Alive. The song, "Til My Fingers Bleed", was released on July 7, and the three acts performed it together at the opening ceremony in
Riyadh on July 10. == Other ventures==