<Li> Reid Kirchenbauer as an 8 - year - old Whobris . </Li> <Li> Mindy Sterling as Clarnella Who, one of the Grinch's childhood caretakers . </Li> <Li> Rachel Winfree as Rose Who, one of the Grinch's childhood caretakers . </Li> <Li> Jeremy Howard & T.J. Thyne as Drew Lou & Stu Lou Who, troublesome sons of Lou and Betty, and brothers to Cindy Lou . </Li>

Who does ron howard play in the grinch