Backstage - Series Trailer 

Above is a video featuring animation not seen in the Spawn series. While I'm not completely sure what the footage was created for, it appears to be test footage of some sort. One of the coolest things about the video is seeing Spawn use the green hell-energy. He only used it once in the actual show, but the version shown in this trailer is much closer to what the energy looks like in the comic. Major thanks to Jon T. for providing the footage!