Raster Images -
Pictures of the wildest imagination. Usually pencil on paper, scanned, and modified using the computer for colourisation and proportional editing.
Here is the oldest I remember making. I drew her on the back of a printout from a computer class. So the computer code looking decorations? Yes. Those are actual computer code.
From the hero, here is a crazy bird. I drew him, then my daughter and I collaborated on colouring him and finishing the job.