Two others who were cast in the Sister Princess anime series, Yumiko Kobayashi and Nana Mizuki of the unit Prits, also made regular appearances on the program.

An audition was held for to create a protegee group for Prits known as Puppy's which consisted of Yasuko Itō, Shizuka Hasegawa and Ai Matayoshi; the members in Puppy's were also regular members to Dengeki G's Radio.

Puppy Girls: Watashi no Ojisama (パピー・ガールズ～わたしのおじさま～, Papī Gāruzu ~Watashi no Ojisama~) was an original listener-participation game on Dengeki G's Radio, written by Sakurako Kimino.

The concept was that the listeners of the program would be able to send in postcards of what they would like to hear in a radio drama for the characters in the series.

A segment of the game ran in Dengeki G's Magazine between the March and October 2003 issues, with accompanied illustrations by Pururu Kinkakuji.