Mutter is a Scat (a cat rabbit) who lives with the Scat Community in the jungle woods of Hyden. Mutter stands at three feet tall and does not speak a single word for reasons not known until Book Four!
MS&L first meet their quite friend in the white sand of the Malloy Desert. Without Mutter, MS&L might not have been able to reach the Key Of Lightning!
Although Mutter is revealed in Book One it is not until Book Three that MS&L begin to learn about their silent friend. Though he is silent, Mutter possesses an unparrelled ability to outthink any troubling situation within a blink of an eye.
The most quiet of all of MS&L’s allies is also the most adventurous!