THE FLASH S3-E14 "ATTACK ON CENTRAL CITY" THE EPIC CONCLUSION TO THE TWO-PART BATTLE WITH GRODD – When Grodd (voiced by David Sobolov) and his army of gorillas bring the battle to Earth-1, The Flash and team must find a way to stop them before they destroy Central City. Gypsy (guest star Jessica Camacho) returns to join the fight. Meanwhile, Jesse Quick decides she wants to stay with Wally on Earth-1. Dermott Downs directed the episode with story by Todd Helbing and teleplay by Benjamin Raab + Deric A. Hughes. Original airdate 2/28/2017.