 However, despite showing several appearances, Romana regenerated only once on that occasion.In "Utopia", the Master, just before regeneration, claimed that he would become "young and strong", implying that he could choose the form of his new body.The human-Time Lord hybrid River Song in "Let's Kill Hitler" claimed she was "focusing on a dress size", but subsequently weighed herself, seeming unsure of how her new body had truly developed.<ref name="hitler"></ref> The Doctor said on several occasions he wished he was "ginger", which he has seemed unable to control in previous regenerations.