<P> Madison `` Maddie '' Rooney ( Dove Cameron ) is Liv 's identical twin sister and the second eldest child of the Rooney family . Like Liv , she is older sister to Joey and Parker , as well as a sophomore at Ridgewood High . She is captain of the girls ' basketball team of Ridgewood High and is equally diligent to her team captain duties as her studies . Her main love interest is Diggie , captain of Ridgewood High 's boys ' basketball team . But because of his constant moving , they break up . Her new love interest is Liv 's co-star in Voltage , Josh . Her catchphrase is `` Bam ! What ? ! '' , a phrase she came up with once at age 11 when she was telling Karen that she beat the boys at basketball . She is sometimes called Mads by Diggie and Willow , such as in `` Slump - a-Rooney '' and `` Shoe - a-Rooney '' . In `` Sleep - a-Rooney '' , it was revealed that Maddie 's full first name is `` Madison '' . It is shown that Maddie shares the personality quirks of her father , Pete , as seen in `` Dump - a-Rooney '' , when the pair shows their competitive side while preparing for a two - on - two basketball tournament . In `` Shoe - a-Rooney '' , Maddie becomes addicted to a comfortable pair of high heel shoes that she borrowed from Liv . When the addiction becomes problematic , Liv , Willow , Diggie , and Stains stage an intervention which ends with Liv dropping the shoes into a woodchipper . </P>
<P> Madison `` Maddie '' Rooney ( Dove Cameron ) is Liv 's identical twin sister and the second eldest child of the Rooney family . Like Liv , she is older sister to Joey and Parker , as well as a sophomore at Ridgewood High . She is captain of the girls ' basketball team of Ridgewood High and is equally diligent to her team captain duties as her studies . Her main love interest is Diggie , captain of Ridgewood High 's boys ' basketball team . But because of his constant moving , they break up . Her new love interest is Liv 's co-star in Voltage , Josh . Her catchphrase is `` Bam ! What ? ! '' , a phrase she came up with once at age 11 when she was telling Karen that she beat the boys at basketball . She is sometimes called Mads by Diggie and Willow , such as in `` Slump - a-Rooney '' and `` Shoe - a-Rooney '' . In `` Sleep - a-Rooney '' , it was revealed that Maddie 's full first name is `` Madison '' . It is shown that Maddie shares the personality quirks of her father , Pete , as seen in `` Dump - a-Rooney '' , when the pair shows their competitive side while preparing for a two - on - two basketball tournament . In `` Shoe - a-Rooney '' , Maddie becomes addicted to a comfortable pair of high heel shoes that she borrowed from Liv . When the addiction becomes problematic , Liv , Willow , Diggie , and Stains stage an intervention which ends with Liv dropping the shoes into a woodchipper . </P>
who acts as maddie in liv and maddie
who acts as maddie in liv and maddie
Dove Cameron
Dove Cameron