I think it was Mordecai. I'll not Google and wait for your answer.
Matilda. Then she had the operation.
Hippy.
Mortimer .... You shouldn't have said don't google cos I don't like being told what not to do :p I googled the shizit out of that :p
I believe his first appearance was as Tugboat Willy.
Doug
He wasn't a mouse at all. He was Ricky Rat. But due to the prejudices against rats, he had to be changed to a mouse.
A word. I WIN YAY