A girl dressed like a detective gets chloroformed. Source: http://ac.qq.com/Comic/comicInfo/id/632757 Found by Nephenthal

The sexy main female is chloroformed in a parking garage by someone dressed as a janitor. The 'janitor' turns out to be another sexy woman. Chapter 18 Source: http://ac.qq.com/ComicView/index/id/630977/cid/18?fromPrev=1 Found by Nephenthal

From The Limited Series in 1999 Captain America. Here we see Rikki in limp form, arm carried after Captain America saves her from drowning. Source: Comicvine

Just Jean Grey trying to seek help from Doctor Strange to find more about the Phoenix Force Source: readcomicsonline.to

All of the X-men got captured after they tried to raid a group Source: readcomicsonline.to

After Jean awakes the Phoenix Force is released but most of her friends got killed during the fight, maybe Source: readcomicsonline.to

Jean Grey went unconscious after confronting with the Phoenix Force ,so Emma Frost and the older "ghost" Jean Grey try find a way to wake her up. Source: readcomicsonline.to

Interesting scene from a 1989 issue of Batman. Batman sneaks into a woman’s apartment and chloroform’s her.

Negative Woman is run through by an electrical sword, knocking her out. She is then slung over a horse (I've classified that as an OTS!)

The Earth 2 Huntress is KO'd by Black Canary.

Black Canary is used as a human dartboard here. The Earth 2 Huntress (Paula Brooks) is also in peril.

From the He Man and The Masters of The Universe Episode. The Cat and The Spider. Teela is knocked out, we get a nice view of a limp Teela, before she is placed on the ground still out like a light. Source: Youtube

The Magdalena is lifted unconscious by a swarm of Darklings as Jackie stares ahead angrily. Source: http://readcomiconline.to/Comic/The-Darkness-1996/Issue-18?id=32142

A young woman is strangled unconscious.

A young woman is chloroformed, stripped and then bound and suspended by her hands.

Spider-Gwen is zapped by the Baxter Building's automated defense system.

George Jetson gasses a young woman before making a heroic sacrifice.

Catwoman punches out Poison Ivy to release her hold on Harley Quinn. Supergirl, who is in the room with Batman and Harley, briefly faints as Ivy's control is broken.

Sheena and Lirio are knocked out with tranquilizer darts.

Lara Croft, Knocked out and carried by thugs into a cell. Source: Deviantart