We’ve already gotten a glimpse of Arrow from the upfronts last month, but now CW has released a new longer trailer that seems to set up the whole season of the DC Comics adaptation attempting to fill the void left behind by the end of Smallville. What’s cool is that this new trailer teases at an interesting bad guy, maybe for the whole series. Unfortuantely, it’s only a quick shot in the whole trailer so it’s the epitome of a tease, so there’s no telling where this can go. Check out the trailer after the jump.Did you catch it? Well, if not, there’s a quick shot of the mask belonging to Deathstroke, a villain (sometimes an anti-hero) who hails from Teen Titans back in the 1980’s. The character actually became so popular after becoming the main adversary for the adolescent heroes that he was given his own series, and is now in the Top 100 favorite comic book characters of all-time. According to the DC Comics Database, Deathstroke is the world's greatest assassin/mercenary and an enemy of the Teen Titans. Originally a soldier in the U.S. Army, he was part of an experimental super-soldier project where he gained enhanced strength, agility and intelligence. I’m looking forward to checking out Arrow in the fall, and you can be sure there will be a push to promote the new series at Comic-Con so stay tuned for our coverage next month.If you missed it, take a look at the current TV panel schedule for Comic-Con 2012 right here, which includes Arrow. Check out a new poster for the series below (via Green Arrow TV).