Hello, we haven't responded to these claims yet because we wanted to get our facts together first, instead of just forming a response automatically.  So far it is looking like they do have rights to this character.  I will be meeting with our graphic designer in order to explore other options this evening.  Having found this character on a non-trademarked images site, we thought it was free to use.  You are correct though, we don't want this to become a problem so we are handling it immediately.  Thank you for bringing this to light, and we will let you know what we come up with soon, as far as a new design!  Everything in the logo besides the characters face is original, and the term "CoinPal" has been registered as a trademark by our company.

Thanks everyone for your help!