Basil

Rose the Penguin or better known as Rosie, is Willy the Penguin's love interest.

Background
Rose was born to two loving parents, and lived a normal, until she met Willy.

When Rose and Will were out on walks, they bumped into each other. Rose just though of it as a accident. but to Will, it was love at first sight. She and Willy are still friends, even though she has no idea Willy is in love with her.