A few hours after their debut, Kep1er announced Kep1ian (Read Keplian) as their fandom name.
According to a tweet on Kep1er's official Twitter account, Kep1er can be interpreted as, "People who support Kep1er".
While announcing their fandom name, Kep1er also wrote, "Let's make happy memories with Kep1er."
In addition to the official fandom name, Kep1er also announced their fandom colors which consist of Lavender & White and Lavender & Yellow.
Are you one of the Kep1ian? (www.kpopchart.net)