Aimee Mann

Aimee Mann is an American rock singer, songwriter, guitarist, and bassist. She provides the voice of Opal in the episode "Giant Woman".

Her character, Opal, has appeared twice in the series (even though Aimee Mann only voiced her once so far) - the second time being in "The Return".

Trivia

 * Aimee Mann is one of Rebecca Sugar's biggest musical inspirations. This is most likely why she voices one of the characters (Opal) on the show.
 * She has had the least amount of speaking time of any voice actor on the show.