On today's What to Watch: Alan Tudyk is back for a new season of Syfy's Resident Alien, but this time, instead of trying to kill earth's inhabitants, his Harry is trying to protect humans, especially his friend Asta. On Batwoman, our hero is in a rae against time after Poison Ivy and Poison Mary form a new alliance and plot to drown the industrial district of Gotham City. And on the new comedy Astrid & Lilly Save the World, two high school friends are also monster hunters who accidentally open a portal to another dimension, unleasing all kinds of creepy creatures. Plus, entertainment headlines — including Bravo firing Real House of Salt Lake City's Jennie, a new Percy Jackson adaptation gets the green light, and Disney responds to Peter Dinklage's criticism of a Snow White and the Seven Dwarves remake — and trivia. More at ew.com, ew.com/wtw, and @EW. Host: Gerrad Hall (@gerradhall); Editor/Producer: Joshua Heller (@joshuaheller); Writers: Tyler Aquilina (@tyler_aquilina) and Calie Schepp; Executive Producer: Shana Naomi Krochmal (@shananaomi). Learn more about your ad choices. Visit megaphone.fm/adchoices