 In the interest of transatlantic appeal , it was decided that the main characters would be mostly American and therefore actors capable of producing an appropriate accent were used . British , Canadian and Australian actors formed most of the voice cast ; the only American involved was stage actor David Holliday , who was noticed in London 's West End and given the part of Virgil Tracy . Following the completion of the first series , Holliday returned to the US . The character was voiced by English @-@ Canadian actor Jeremy Wilkin for Series Two . 
 In the interest of transatlantic appeal , it was decided that the main characters would be mostly American and therefore actors capable of producing an appropriate accent <a href='uninflect' title='1'><mark>were</mark></a> used . British , Canadian and Australian actors formed most of the voice cast ; the only American involved was stage actor David Holliday , <a href='null_relcl' title='2'><mark>who</mark></a>was noticed in London <a href='null_genetive' title='3'><mark>'s</mark></a>West End and given the part of Virgil Tracy . Following the completion of the first series , Holliday returned to the US . The character was voiced by English @-@ Canadian actor Jeremy Wilkin for Series Two . 
In the interest of transatlantic appeal , it was decided that da main characters would b mostly American and therefore actors capable of producing an appropriate accent was used . British , Canadian and Australian actors formed most of tdavoice cast ; the only American involved was stage actor David Holliday , was noticed in London  West End and given the part of Virgil Tracy . Following thdaompletion of the first series , Holliday returned to the US . Thedaaracter was voiced by English @-@ Canadian actor Jeremy Wilkin for Series Two .