Once in the Joestar Mansion, Dio wasted no time passing himself as a model gentleman while tormenting his new adoptive brother Jonathan in various ways to break his spirit. But Dio's plan backfires when he forcefully kissed Erina Pendleton to shame her and deny Jonathan a relationship with her. When Jonathan learned of this, he pummels Dio before George intervened. Though Dio retaliated by placing Jonathan's dog Danny in the incinerator, he realized that he needed to change his plans a bit.