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 in all caps) is an extended play (EP) marketed as the third single of Japanese boy band JO1. It also served as the lead single for their second studio album, Kizuna (2022). The EP single includes a total of six songs and was released by Lapone Entertainment in three physical editions and one digital edition on April 28, 2021. It features the contributions from Japanese and South Korean songwriters and production teams, including Score, Megatone, Teito, Kebee, Masahiro Ōchi, Hayato Tanaka among others. The single topped the Oricon Singles Chart and was certified Platinum by the Recording Industry Association of Japan (RIAJ), with its lead track "Born to Be Wild" peaked atop the Billboard Japan Hot 100.