Ernie (birthday January 28th) represents the mischievous part, full of childlike naivety and impartiality. He has a carefree disposition and often makes life difficult for Bert with his sometimes anarchic ideas and ideas. Ernie is known for his rubber duck and throaty giggles; he also likes to do annoying things and loud things like playing drums or the piano. Like many American children, he likes to play bat and balloons. Ernie has a cousin named Ernestine.