ashley suzanne johnson (born august 9, 1983) is an american actress, voice actress and singer. her work includes roles as chrissy seaver in "growing pains", annie warbucks in "", alex marshall in "what women want", gretchen grundler in disney's "recess", jinmay rayfield in "super robot monkey team hyperforce go!", terra in "teen titans", gwen tennyson in the "ben 10" franchise, ellie in "the last of us", tulip and lake in "infinity train", and margaret in "much ado about nothing". she currently stars in the nbc drama "blindspot" as fbi forensic specialist patterson, and is a cast member of "critical role".