A few bondage, unconscious and even hand gag scenes from this sexy manga.

Supergirl is dragged deep underwater by a bunch of tentacle monsters until she falls unconcious from lack of oxygen.

From the Mass Effect video game. Amazon S3 link takes you to the full file.

Cassie Sandsmark, the new Wonder Girl, is attacked by her own armor..Red Robin and Superboy help her get out of the armor, leaving her in her skivies...an old boyfriend shows up and runs off with her costume...leaving her extremely upset..kinda kinky for a mainstream book! Source: blog

In this self-contained story, Sonja has been defeated by a warrier woman named Raven (not shown, unfortunately), and is tied to a tree. This issue features Red tied up for about half the time.. Source: blog

From the December 1971 issue of Justice League of America -- Black Canary is punched by a mind-controlled Green Arrow, and put into bondage. It isn't technically a knockout scene -- but I know that you guys like to see the Canary tied up! Source: My Collection

From the February 1973 issue of Justice League of America -- the Black Canary is KOed twice! First, she is rendered unconscious by the "Gamma Gong" (the dangerous device is being telekinetically manipulated by the villainous Hector Hammond). Later on, she gets a squeeze from the Shaggy Man, and passes out in the monstr...

Spider Woman - in an early appearance - is nearly drowned, blasted and finally KO'd by Alicia masters, who herself has been turned into a spider-monster.

JC rescues an Amazon girl who gratefully takes him back to her city. But the Amazons want to keep him, so Dejah Thoris has to come and rescue him. She is wounded near the end, but luckily is revived by the local Goddess. This should have been a classic, but - apart from the cover - it didn't work for me.

Mantis "departs from her physical form". Source: Comic

Black Widow is knocked out by Master Man, and than she and The Falcon are taken to the Red Skull's hideout, where they are bound and gagged. Captain America saves them, though.

A guy hypnotizes a girl and tries to kiss her but she wakes up. Source: http://g.e-hentai.org

The cover depicts Dejah Thoris in a rather perilous situation. I initially thought she was unconscious. Spoiler alert: The final pages depict the death of a character, Linea. Yes, it is technically a death scene, but I felt the art and posing were good.

A girl who is a symbol for The Devil lies unconscious while magical stuff happens to her.

Interesting scene here. A girl gets on a bed and falls asleep very quickly. It probably has something to do with this "wire" that she pulled out of herself. The awkward boy she is with tries to plug it in her, "waking" her up. Is she a computer or something?

Just various pages (including cover) showing unconscious girls. One of them looks like she has elf ears.

A girl kisses another girl on the lips, causing her to faint. Both girls are wearing swimsuits. Included the sexy cover!

From Avengers, Volume 1, Issue #116 (Marvel, October 1973) -- the Scarlet Witch is KOed by, of all things, a volcanic eruption accidentally triggered by the Silver Surfer! While the Vision and Surfer battle it out, two enterprising natives decide to offer the sexy, helpless avenger to the volcano god; a rare two-person...

Here are some of the best KOs of the Scarlet Witch, from Avengers, Volume 1, Issues #185-187 (1979). There are also KOs of the Wasp and Ms. Marvel. The Wasp scene is one of my favorite KOs of her character, as it occurs when Janet has grown to full-size and is gloating over her downed opponent. The Ms. Marvel scene, by...

Wonder Girl goes in search of a mysterious scarab that seemss to be sending her messages..after nearly being killed by a poisonous snake, she comes to in the lair of a ammorous beetle-prince.. Source: blog