Rudolf is infamous for having a penchant for cracking horrible 'dad joke'-level puns. This causes Air Groove (her vice-president) no end of grief.
Japanese fan artists may also sometimes draw a younger version of Rudolf, which they name "Luna". This nickname is derived from the actual childhood name of the real-life Symboli Rudolf.
Tokai Teio - Rudolf's junior who idolizes her. Fans sometimes depict them both in a father and daughter-like relationship. This is because the real-life Symboli Rudolf is the sire (father) of Tokai Teio.
