In Legends, Darth Vader and the Ghost Prison, we see him come to the rescue of the Imperials and the Empire in general when Gentis turns on everyone, causing a terrorist attack. Dispersing poison gas that melts people's lungs and bodies from the inside out, Vader goes to find Sidious in the hopes that the virus hasn't hit him yet either...however...it has...

Learn more about your ad choices. Visit megaphone.fm/adchoices