User blog comment:Thailog/Ep. 206 "Bloodlines" discussion/@comment-98.224.232.203-20120602204959/@comment-432124-20120602210948

From the sound of his voice, Bart is apparently voiced by Jason Marsden. Marsden has played roles in a lot of animated T.V. shows, including W.I.T.C.H., Batman: The Brave and the Bold, Static Shock, Kim Possible, etc.