Energy

Energy is a character who makes his first appearance in New with the Old is the main villain of his Villain Story.

Cancellation
Energy's series stopped when Pixel lost motivation to continue the series, and when Gate to the Multiverse was finished, Pixel says Energy's story never happened in the first place, due to the Otherworld showing up and destroying the book before it could ever get the last 2 souls needed.

Looks
Energy is a silhouette-like creature with glowing red eyes with a design similar to that of Mario in his Big form.

Trivia

 * Many people have noted that Energy looks awfully similar to Infringio, however Pixelcraftian has stated that it is not him.