Marissa Lenti is an American voice actor who voices Joanna Greenleaf, Oscar's Aunt, and the Medium Boy in RWBY.
They are best known for voicing Momoko Hyakushiki in Nanbaka.
They also provide additional casting since Volume 4 using her position as a director at Sound Cadence Studios, where the actors of RWBY based in the Dallas-Fort Worth area, such as Aaron Dismuke, record their lines.[1]