WPA is WiFi Protected Access - it's the most common method of encryption used to secure a wireless network. If you have a laptop or smartphone and you're trying to connect to a WiFi network, you'll usually need to enter a WPA key (or password) in order to connect to it.
In the live-action adaptations by Sir Peter Jackson, Sauron is portrayed by Benedict Cumberbatch in The Hobbit trilogy (who also portrays Smaug in the same trilogy) and was played by Sala Baker and voiced by Alan Howard in The Lord of the Rings trilogy.
The seriesâ cast already includes Brandon Routh as incredible shrinking hero The Atom (aka Ray Palmer), Wentworth Miller as Captain Cold, Dominic Purcell as Mick Rory and Victor Garber as Prof. Martin Stein among others. Darvill will play a character titled the Traveler, a cocksure time-hopping adventurer.