Challenger (EP)

"Challenger"
Normal and digital special edition cover
Single by JO1
from the album Kizuna
LanguageJapanese
A-side"Born to Be Wild"
ReleasedApril 28, 2021 (2021-04-28)
Recorded2021
GenreJ-pop
Length
  • 13:37 (Limited edition A)
  • 13:33 (Limited edition B)
  • 13:46 (Normal edition)
  • 21:10 (Special edition)
LabelLapone Entertainment
Producer(s)
  • Score (13)
  • Megatone (13)
  • Savage House Gang
  • $$am
  • Jone (Papermaker)
  • Teito
  • Jung Ho-hyun (e.one)
  • Ji Ye June
  • Jayins
  • Naiv
JO1 singles chronology
"Stargazer"
(2020) 		"Challenger"
(2021) 		"Stranger"
(2021)
Music video
"Born to Be Wild" on YouTube

Challenger (stylized as CHALLENGER) is an extended play (EP) marketed as the third single of Japanese boy group JO1. It also served as the lead single for their second studio album, Kizuna (2022). Consisting of a total of six songs, the EP single was released by Lapone Entertainment into three different physical editions and one digital edition on April 28, 2021. It features the participation of various Japanese and South Korean songwriters and production teams such as Score, Megatone, Teito, Kebee, Masahiro Ōchi [ja], Hayato Tanaka [ja] and others. The single earned the top spot at the Oricon Singles Chart and received a Platinum certification by the Recording Industry Association of Japan with its lead track "Born to Be Wild" peaked atop the Billboard Japan Hot 100.