Dipper also sold and auctioned off signed memorabilia in support of his charity which cares for children who have experienced or witnessed violence and aims to prevent violence in the lives of children .
His charity is the Alannah and Madeline Foundation .
Dipper also sold and auctioned off signed memorabilia in support of his charity , The Alannah and Madeline Foundation , which cares for children who have experienced or witnessed violence and aims to prevent violence in the lives of children .