The notion that Warner Bros./Time Warner Inc. and DC Films are apparently “100%” willing to make R-rated comic book superhero movies shouldn’t come as a surprise. The Wrap got that juicy quote yesterday. Thogh we probably won't get an R-rated Wonder Twins adventure (though I would watch), it is worth remembering that Warner Bros. has already released several high-profile R-rated comic book and superhero movies. They were doing it before 20th Century Fox made it hip with Kingsman: The Secret Service and Deadpool.First, while New Line Cinema didn’t become an explicit part of Warner Bros. until 2008, they have been owned by Time Warner Inc. since 1996. So, if you want to count New Line Cinema, that means we must include Wesley Snipes’ Blade trilogy, which basically kick-started the second wave of comic book superhero movies in 1998. You might argue that Spawn ($87 million on a $40m budget with a strong post-theatrical life) did so a year prior. While that film was PG-13 in theaters, its definitive version is the R-rated post-theatrical cut.And while it’s obviously not a superhero movie, New Line released David Cronenberg’s adaptation of A History of Violence back in September of 2005 as well. But even if you argue that pre-2008 New Line films shouldn’t count, that still leaves us with regular Warner Bros. And they have not been shy about releasing R-rated comic book movies.Keanu Reeves’ Constantine snagged $232 million worldwide on a $100m budget back in February of 2005. Warner Bros. released the Wachowksi-produced and James McTeigue-directed adaptation of Alan Moore’s V for Vendetta the next year to the tune of $132m worldwide on a $54m budget. And tomorrow is the 10-year anniversary of Zack Snyder’s blockbuster adaptation of Frank Miller’s 300, which turned Gerald Butler into a movie star and earned a whopping $456m worldwide. Up until last weekend, that film’s $70m Fri-Sun debut was the biggest opening ever for an R-rated movie not opening over a long weekend.Two years after 300, Warner Bros. released Zack Snyder’s R-rated, nearly three-hour adaptation of Alan Moore’s Watchmen. The ambitious film cost too much ($130 million) to be considered a hit with just $185m worldwide. It was brutally frontloaded in the states, earning $107m from an otherwise impressive $55m debut weekend. But until Deadpool, it was the biggest-grossing R-rated outright comic book superhero movie ever. Oh, and Warner Bros. also offered the surprisingly good 300: Rise of an Empire, which earned a decent $337m global on a $110m budget three years ago.And if you want to count them, you also have the R-rated Ultimate Edition of Batman v Superman: Dawn of Justice and the R-rated DCAU movies The Killing Joke and Justice League Dark over the last year. On the small screen, Gotham offers outright R-rated violence every week. And while they are original films, I darn well count The Matrix trilogy ($1.633 billion total on a combined $365m budget) as superhero movies, and you should too.Now that doesn’t mean that they are prepping an R-rated Man of Steel 2, and they probably should have made Jonah Hex an R-rated offering back in the day, but the Dream Factory has a handful of major R-rated comic book and superhero offerings to its credit. Prior to Deadpool, the highest-grossing R-rated comic book movie (300) and R-rated comic book superhero movie (Watchmen) were both Warner releases.Heck, in general, if you look at the top R-rated debuts of all time (The Matrix Reloaded, American Sniper, The Hangover part II, 300, Sex and the City, etc.), most them are Warner Bros. releases. So yeah, of course Warner Bros. and DC are willing to make an R-rated comic book superhero movie. They’ve done it with relative success several times before.