Nibbles

Nibbles (also known as Tuffy) is a fictional character from the Tom and Jerry cartoon series. He is the little, blue/gray, diaper-wearing orphan mouse whose cartoon debut came in the 1946 short The Milky Waif. Tuffy was later featured in the 1949 Academy Award-winning short The Little Orphan, as well as Two Little Indians and The Two Mouseketeers (both 1952).