The same catgirl/maid is tricked by some creepy dude, and chloroformed with a plaid cloth. Next scene, she is bound and gagged. Some nudity involved later. Great chloroform scene!
Contributed by: g.e-hentai.org
Author: IOGI Juichi
From an adult manga. A woman is caught hacking into some computers, and is chloroformed from behind. She wakes up bound tightly and gagged.
Information about this manga: http://www.mangaupdates.com/series.html?id=49737
All three girls get gassed by a woman weilding a spray can. They wake up bound and gagged. Nice scene!
Side note: This manga has a lot of bondage in it, but most of it is not appropriate for this site.
Alright, this may actually be my MOST favorite Empowered scene ever...and it doesn't even involve chloroform!
Empowered has just completed her mission, and is walking triumphantly through a hospital. She's suddenly grabbed from behind, with a gag shoved over her mouth. Turns out the villains of the story aren't done...
Zatanna is knocked out while undercover onboard a cruise ship. She is actually betrayed by a female accomplice. Very good full body shot at the end.
In the next issue (#251), Zatanna is seen bound to a table and gagged.