Grace Amber Burrows is Troy's younger sister, but only by two months. She knows her older brother is the red power ranger and she will become the purple power ranger. The Armada learns about Troy's weakness when Grace gets attacked by xborgs. Troy's one weakness is his sister. How will Troy feel when the new ranger on the team turns out to be his sister? Will they beat the Armada or will the Armada destroy the rangers? Don't OWN Power Rangers. Only Grace and Phillip (Emma's older brother).