| Well, thank you for inviting me!
This article belongs to Phineasnferb. Please ask them before editing the article. If you do so without asking, or if the owner says no, you will get a warning. If you continue, you will be blocked. (March 3rd, 2013)
Harold is Isabella's new baby brother.
Harold is voiced by Tara Charendoff, who voices Timmy and Poof on 'The Fairly Oddparents', Raven, Timmy and Teether on 'Teen Titans' and Dil on 'All Grown Up'.
Harold's crying sometimes keeps Isabella up all night.