This is a rare original production background featuring images of Eddie Brock from Spider-Man (1994-1998). The untrimmed pan background measures 10.5" x 21.5". This background is seen about 14:35 into the tenth episode of the first season, "The Alien Costume (Part 3)". The second image shown is a screen capture from the episode showing how the background was cropped down and displayed in the camera's pan movement (this image is for reference purposes and is not an included part of this item).
This series was computer animated, so there are not hand-painted production cels from the series. When the studio stored away their art from the 1990s, they disposed of all production drawings, so only the background still exist. Most backgrounds are more scenic, and rarely have character imagery, so this piece is a rarity for any Marvel fan.