This is called Catwoman Syndrome. Catwoman, originated as a prostitute who knew karate and stole things. Now-a-days she's a woman who steals things and knows how to fight. She doesn't really kill people, or scare people like The Joker does, and she's not even as psychotic as Poison Ivy. When arrested, she doesn't go to Arkham, she goes to jail. Sometimes she helps Batman, 'cause she finds him dreamy.
Now you might be asking yourself, "Okie dokie, but how is this a syndrome? Who else is like Catwoman?" I'LL TELL YOU! Keep your pants on.
I know very little about Sherlock Holmes except for what's in the movies. But since this is a movie blog, you'll just have to get over it. Irene Adler, played by our favorite Mean Girl, Rachel McAdams, has a sever case of Catwoman Syndrome. She steals stuff, she gets in deep with worse people than herself, and she's more than "just frenemies" to Sherlock.
WHO ELSE!? Well, The Avengers has brought us a Black Widow, (Scarlett Johansson,) character who, at least in the movie and the new animated TV show, finds Hawk Eye appealing, and has a criminal history. In the movie she's on a path leading her to redemption, but sometimes we see Catwoman on the path to redemption, so we'll go right ahead and completely indict her into Catwomanhood.
But why does this stock character exist? Probably because if Batman's love interest was Batgirl, or some other hero, we'd all be pretty bored. Even the love-interest Thalia (right,) is infested with Catwoman Syndrome. We could almost go as far as to say Andrea from Batman Mask of the Phantasm is a kind of Catwoman. (<-- 10="10" a="a" card.="card." case="case" day="day" however="however" i="i" in="in" it="it" m="m" more="more" of="of" playing="playing" rule="rule" s="s" spoiler="spoiler" the="the" this="this" year="year">-->
Now it's your turn! I can't blog anymore because I'm tired. I had to work early. That's what happens when you don't make enough money writing a blog to support your rock-n-roll lifestyle!