Ok I'm going to say this Whisper is the mascot of Yokai watch here in The USA. While Jibanyan is the mascot of yokai watch in Japan,Whisper who was seen in the 1st episode of the anime and the 1st game is our English dub mascot because Whisper was 1st to be shown. Whisper USA mascot Jibanyan in Japan.
Hmm that's interesting. I really do like Whisper, but I didn't know that he was the mascot for the U.S. and that Jibanyan is the mascot in Japan. That's very interesting.