The Milky Waif

Nibbles (also known as Tuffy) is a fictional character from the Tom and Jerry cartoon series. He is a small, blue/gray, diaper-wearing orphan mouse whose cartoon debut came in the 1946 short The Milky Waif. He looks alike Jerry and smaller than him, presenting him to guess him as Jerry's younger brother. 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).