There was an episode of Buffy in which her mother was dating or perhaps engaged to a man who decided to exercise his stepfatherly rights and spank Buffy. They faught, and the would-be spanker wound up dying. I don't remember all the details.
Redskinluver, I just couldn't see Xena ever getting a spanking from anyone. As a singer in the early '70s put it, "You don't cut on Superman's cape....you don't poke the mask on the Old Lone Ranger...." To that, he might well have added, "You don't spank Xena," not unless you wish to draw back a bloody stump where your hand was. However, Xena GIVING a spanking would definately be in keeping with her character. I came across a fan site a few years back. (Sorry I don't remember the URL. If it was ever ever in my computer, it was lost when it crashed.) Anyway, the fansite had letters written to Gabrielle. She would reply to these letters. One of the letters asked if Xena had ever given her a bare bottomed spanking in front of anyone else. Her answer was, "Oh, my yes. Xena believes public humiliation is good for building character."
"You don't pull on Superman's cape, you don't spit into the wind, you don't pull the mask off the old Lone Ranger and you don't mess around with Jim." --from "You Don't Mess Around With Jim" by Jim Croche.
Ironically though, in the song another person ("Slim") does successfully "mess around with Jim."
Possibly her one-time nemesis (she started out as a villainess) Hercules could've given Xena a nonconsensual buttwhacking, but even there I'm not certain because he'd then have to worry about her retaliation at some point--IMHO she's a 100% 'toppish' lady. I also choose to believe that she spanked Gabrielle's bare bottom frequently and very soundly, it just strikes me that it was part of their mentor-protege' relationship. (I could also, due to my F/M preference, easily envision Xena giving Hercules' protege' Aeolus a good hard pants-down paddling over her knee--he never seemed to trust that she'd actually reformed.)
There were a number of 'toppish' heroines on television at about Xena's point in time or a little later, young women characters both physically and psychologically strong, who would make convincing spanko-tops--Buffy the Vampire Slayer, her fellow slayer Faith, Seven of Nine ("Star Trek: Voyager"), Dark Angel (short-lived series of the same name), Kara/Supergirl ("Smallville"), etc.
But back to "Xena: Warrior Princess"--just replace that sword in her hand with a good-sized Spencer paddle and you've got an image that was almost certainly in the fevered fantasies of some of her fans (male and female)... --C.K.