B-kun is one of the characters from Pop'n Music 14 FEVER!.
The rumored easygoing idol, "Yuru-Idol" B-kun!
The colorful head contains the spirit of the "game heir".
He is a yellow anthropomorphic uppercase letter B with an orange belly, wearing a red/white striped birthday hat with a white tip. He also has white blush and black eyes.
B-kun's 2P palette recolors him as lavender "B" with a violet belly.
- B-Kun is the mascot of the 2005 BEMANI EXPO.
- B-kun shares his birthdate with Kakeru-kun, Kuro and Shiro Guruppa, Shima, Sumiko, Pirozhki, Whip, and Kurota-chan.