A-Tom 아톰 is the main rapper of Topp Dogg.
A-Tom was born Kim Sanggyun 김상견 on Tuesday, May 23, 1995, in Gwangju.
Like fellow member Yano, he was born in the Chinese Year of the Pig. He and Hansol are both Geminis. A-Tom and Nakta’s blood type is O. He’s 178 cm or 5'10" tall.
He graduated from Gwangdeok High School in 2014. He has a younger brother.
Before debut, he was a backup dancer for Evol. He was onstage with them for performances of “Get Up” from March-April 2013.
The Topp Dogg members chose A-Tom as the one most admired by the other members. He shares a room in the dorm with P-Goon, but their room is so hot, he usually goes and sleeps on the couch.
He thinks that his most charming feature is his smile. If he weren’t an idol, he’d want a career in fashion.
In Topp Dogg canon, he’s in the knight kingdom with Nakta. Kidoh described the knight kingdom as “a group of friends who have an upright image.” According to A-Tom, compared to the other kingdoms, the knights “are the most human-like. That’s why it’s where the most human-like members get together.” A-Tom says, “Because I’m the maknae, I’m a beginner knight. I’m a knight who resembles model Hong Jonghyun.”