Yakko Warner is one of the 3 primary protagonists in Animaniacs and the oldest of the Warner siblings. He is 14 years old, as said in an interview with Tom Ruegger himself.
Full Name: Yakko Warner
First Episode: Star Warners
Voice Actor: Rob Paulsen
Catchphrases: "Hello Nurse!!" "Good night, everybody." "Uuuuuuuuhhhhhhhh..." "Our new friend!"
In the only Pinky and The Brain episode he non-cameo appears in, he is referred to as Yak Soho, a parody of Han Solo. Despite this, he still retains his personality.