Marchi got her start in voice acting in Fruits Basket as Motoko Minagawa, and has worked on and voiced for a number of American adaptations of Japanese anime series, which include Black Cat as Rinslet Walker, Soul Eater as Elizabeth "Liz" Thompson, Sekirei as Uzume, Heaven's Lost Property as Mikako Satsukitane, Panty & Stocking with Garterbelt as Panty Anarchy, A Certain Scientific Railgun as Mitsuko Kongo, Rin: Daughters of Mnemosyne as Mimi, Strike Witches as Charlotte E. Yeager, Freezing as Rana Linchen, High School DxD as Rias Gremory, Witchblade as Masane Amaha and Death Parade as Chiyuki.