Kat Kool is a cat who hosts the last quiz round of Kerwhizz, "Kat Kool's Sound Round". He either hosts it himself, or with a choir formed of various other animals.
His questions are based around sound, with the question being asked in this round varing from what tune matches the tune he plays, to which animal sings the highest/lowest/ect.
In The Race Edit
When Kat Kool appears in the race, he is often seen playing the saxophone, although within the quiz he can play a variety of unusual instruments.