Despite being more refined than her brother , she often shares his vicious and bossy nature , though in a more sibling - rivalry sense .
Molly Tazmanian Devil ( Kellie Martin ) -- Taz 's 16 - year - old sister .
Despite being more refined than Kellie Martin 's brother , Kellie Martin often shares Taz 's vicious and bossy nature , though in a more sibling - rivalry sense .
Molly Tazmanian Devil ( Kellie Martin ) -- Taz 's 16 - year - old sister .