Introduced on thirteen Spirits out of Scooby-Doo Scooby-Dum Scooby-Dum was a supporting character throughout the Scooby Doo Show, voiced by the Daws Butler. [6] Scooby-Dum, a white Merle Higher Dane with spots and you may dollars white teeth are Scooby-Doo’s sluggish-witted relative (their lineage are questionable because Shaggy states that he’s his sibling using one …