When the film adaptation of Kick-Ass was first announced, I was actually very surprised that they were able to get a big name celebrity like Nicolas Cage in a film that they couldn't even find a studio willing to work with (for those who don't know, after being rejected from every studio they could find, Matthew Vaughn, the director, wound up having to pull some strings to finance the movie independently). It was only while reading a review of the film that it suddenly hit me: OF COURSE Nicolas Cage would want to be in this. He loves comics so much that he named himself after a comic book character! - Tobias Drake
Cage is not only a fan of comic books; Ghost Rider is one of his favorites. Enough so that he has a tattoo of the character on his arm. This had to be covered up during the making of the movie to avoid the paradox of his character having a tattoo of his own future self. - M King 49001
Cage is a full-on comic book geek. In addition to the aforementioned facts, he named his son Kal-El, and according to rumors, the reason he was in Ghost Rider in the first place was that he auditioned for every single comic book movie he could until someone gave him a role.
When Hit Girl dresses up as a schoolgirl to get into Frank D'Amico's stronghold, she tells them that she's lost her mommy and daddy. SHE HAS. -MC Smizzle
Cage, as Big Daddy, looks like Batman, and speaks in an overly dramatic, irrhythmic, Adam West-esque voice. Cage is doing it on purpose - he's channelling Adam West's Batman, because that's what McReady would do.
Cage actually stated that's what he was doing in press for the movie.
When Stu Riley's character makes his allusion to Scarface, it could have been just the simple line and pointing a giant gun, but if he had been more genre savvy he would have known he was destined to be filled with bullets soon after saying that line. -firebreatherman
When Todd tells Dave that playing gay BFF for Katie could get him laid, Marty tells him off for how stupid that sounds. However, Dave actually does get laid after playing up the gay thing for long enough and being able to get Katie to forgive him.
Fridge Brilliance bordering on Fridge Horror. When Hit Girl rescues Big Daddy and Kick Ass, we find out that her ammo is named after things related to superheroes. The last weapon she calls out is called Robin's Revenge. Considering what Big Daddy's costume looks like, his and Hit Girl's relationship and what later happens to him, that seems like a pretty appropriate, if not poignant choice of weapon.
Kick-Ass has tons of Fridge Horror and Fridge Logic:
Consider the eventual fates of the characters: Dave will likely suffer major PTSD after seeing worse massacres than most soldiers in Vietnam would have encountered, Hit Girl is now without a father or a real purpose in life, Red Mist has lost a father he seemed quite close to and is going to do everything in his considerable power to destroy Kick-Ass, the mob will likely murder Kick-Ass and Hit Girl for killing Frank, and the police will arrest them for the pile of bodies they left behind. Not to mention the power struggle and deaths Frank's demise inevitably will bring about.
Big Daddy may seem like a hero, but any alternate interpretation can show another side of him: he trained his daughter to become a Serial Killer to fight his battles for him. Hit-Girl has absolutely no remorse for the innumerable corpses left in her wake. Big Daddy irreparably damaged her to the point where killing is completely natural and even responds with horror if she displays behavior normal for a twelve year old. At least Frank tried not to involve his son in violence. Big Daddy made it her entire life (this is also the major reason why Roger Ebertdisliked this movie.)
Not only that but she is now entirely without his guidance. He raised her to be a killer, that is what she is. At 12 years old. Think about that. A 12 year old who knows nothing but murder. She ends the film entering school and such, but she has No Social Skills, and we don't know how well she'll adapt. And if she kills someone again, she is likely to end up shot by police, or engaged in a massive federal manhunt, and thus dying, possibly horribly, because of her father. And she is completely oblivious to these implications.
You can't say she's oblivious to the implications, she's been training most of her life. Not to mention she doesn't need the social skills normal kids have; she will most likely be fine and probably will prefer to not hang around all those boring, normal kids. She's smart, it's not like she'll run off and kill a kid for making fun of her. ... I assume.
In the movie, this can be chalked up to Macready's mangst over his dead wife driving him to seek insane levels of revenge, no matter what the cost. In the comic, the fridge horror is much worse when you find out that Damon made up the story of his wife being killed, and just really wanted to be a superhero like Kick-Ass did, and he essentially kidnapped his own daughter to be his sidekick.