Seo Eun-kwang

In January 2020, Korea Heart Foundation reveals that Seo donated ₩20 million to help financially troubled heart patients at the end of 2019. In April, 2020, BtoB's fan club 'Melody' donated women's hygiene products to commemorate Seo's discharge. The fan club delivered 3,201 sanitary napkins and wipes through World Human Bridge for pregnant women in vulnerable families who are suffering from COVID-19.

On April 25, 2020, Seo broadcast a 12 hours Youtube live, 'Silverlight Is Back' on Btob's official channel to celebrate his discharge from the military. On May 7, 2020, it was announced that Seo would released his debut EP in June. He is the sixth member of BtoB to debut as a solo artist. To accompany the release of the EP, Seo will release "Dear My Dear" (Hangul: 서랍; lit. "Drawer"), which served as a pre-release single for Seo's upcoming first extended play.

On April 9, 2019, while serving the military, Seo donated ₩20 million to help the affected areas of the Sokcho Fire through Hope Bridge National Disaster Relief Association.

Seo reportedly began military duty by enlisting as an active duty soldier in the military band on August 21, 2018 at the ROK army's 27th division, nicknamed the 'We Will Win' unit in Gangwon-do's Hwacheon County. In October 2018, he received first place out of the recruits in the overall results during basic training. On March 14, he was selected as ROK-SWC for receiving more than 90 points in sit-ups, push-ups, 3 km running, 10 km full combat gear marching and more.

In 2017, Seo participated in the Donation Applause 337 Relay Campaign with another 200 entertainers and sports stars. The campaign is to share more than 3 donations and to send warmth to more than 3 friends and purchase more than 7,000 won. This resulting in Seo's 418 fans donated to the Children's Rehabilitation Hospital, a building facility who was fully funded by Seo to treat children with severe disabilities. On November 21, 2017, Seo and his fans donated ₩10 million to help children with childhood diabetes. Cube Entertainment revealed, "Eunkwang's fans wanted to do something nice for his birthday and started collecting donations for the Korea Diabetes Association, which BtoB works as ambassadors. When Eunkwang heard his fans were preparing to donate, he told the label that he wanted to participate as well and he participated in the donation and delivered the scholarship letter himself."

In 2017-2018, Seo was active in the Korean musical theater scene. He was cast in Hamlet, Goddess is Watching You, Three Musketeers and Barnum: The Great Showman. Due to the sudden news of his enlistment, he was only able to perform 6 of the shows for Barnum: The Great Showman despite practice.

In 2015, he sang the OST for the drama Mask with singer Miyu. It was entitled "I Miss You." He also joined the studio panel in the MBC variety show, and virtual marriage program, We Got Married.

In 2014, he became a fixed cast on tvN's variety show SNL Korea 5. He also released the song "Back In The Day" as part of the "Cube Voice Project Part 2".

In 2013, Seo made his musical debut as "Albert" in the musical, "Monte Cristo". He gained good responses after his performance. He also joined the cast for musical, "Bachelor's Vegetable Store" as Chul Jin-yeok.

Seo debuted as the leader and main vocalist of Cube Entertainment's boy group BtoB on March 21, 2012, with the promotional single "Insane". The group is currently active with ten mini albums and two studio album. Eunkwang also contributed as the lyricist in their fourth mini album, Beep Beep with the song "Melody" that is dedicated to their fans.

In 2012, he released a digital single with singer Yoo Sung-eun entitled "Love Virus". A music video was uploaded to BtoB's official YouTube channel, featuring 4Minute's Nam Jihyun and singer Roh Ji-hoon.

Seo Eun-kwang (Korean: 서은광 ; born November 22, 1990), also simply known as Eunkwang, is a South Korean singer, entertainer, and the leader and main vocalist of the South Korean boy group BtoB.

Seo was born on November 22, 1990, in Yongin, Gyeonggi in South Korea. He graduated from Dongshin University, majoring in Practical Music. He has one younger brother named Seo Eun-chong.