Nathan as his animated persona from the movie Emerald Knights.  Basically Knights was a bunch of little stories from the Corps, involving the first Green Lantern to Sinestro and his old friend, to Mogo the living planet.  Hal is telling the stories to the girl at his side since she's the newbie among their ranks, so he's just trying to be friendly, give her something else to focus on other than the giant badguy they're getting ready to take down.<br/><br/><div class="spoiler_container"><div class="spoiler_header" onclick="hideSecond (this);" role="button">Spoiler: Click to Show/Hide</div><div class="spoiler_body">(http://comicattack.net/wp-content/uploads/2011/05/GL_05.jpg)</div></div>