Enhancegirl is a character by DamselBinder on DeviantArt. He writes really good sleepy stories.
Scene based on this story: http://damselbinder.deviantart.com/art/Perils-of-Enhancegirl-2-1-Spectra-s-Sleepy-Trap-449074413
Japanese schoolgirl gets chloroformed and kidnapped by some cultists. The person behind the kidnapping is an evil magical girl. The kidnapped girl is the daughter of a foreign affairs police officer.
Contributed by Ieon from the Western Civilization Board.
For all those 'Giantess KO' fans out there; here's 'Violet' (the re-booted Shrinking Violet, now with growth powers...) getting knocked out in an early 2000's run of the long running Legion of Superheroes series.
Maxima fights Dana Dearden (Obsession) after both women lay claim to Superman - who is split into his red and blue personalities.
Maxima eventually scares off Dana, but rather than winning Superman's love she is instead subjected to a device that blocks her powers and renders her unconscious. Maxima is then transpo...
Harley Quinn fakes being kidnapped to test her new team, but gets KO'd and kidnapped for real by a villain called Harley Sinn.
Full scene: http://readcomiconline.me/Comic/Harley-Quinn-And-Her-Gang-Of-Harleys/Issue-1?id=45333
Right after the events in Secret Invasion. All the heroes captured by the Skrulls are freed. Elektra is among them, she refuses the soldiers help and runs for the woods. She is still weakened and is knocked out by a rifle butt to the head.
Elektra is drugged in a bar (Sadly not shown) and carried to a car. She is later shown in a straight jacket as she fights her captors but gets drugged again. She is then left in the middle of the desert and she passes out from exhaustion.
A group of thugs plans to kidnap Wonder Woman by throwing sleeping gas canisters into her apartment. Harley Quinn gets word of this attack, and decides to "save" Wonder Woman. Disguised as a flower delivery person, Harley goes to Wonder Woman's apartment and throws a gas canister inside. Wonder Woman, wearing a bath r...
The Hand wants to capture Elektra. They send one of her former friends to attack her first. Elektra knocks her out. She then beats the Hand's goons but gets beaten by the leader. Her friend then comes to her senses and saves her.