Imp or Ogre

What would an Imp or ogre look like? Are they related species?

I decided to doodle an idea of what one would look like. They are both characters in the Mystery Play at Penkhull Play. They will be puppets I think, and we already have them made but they might need to change how they look.

I quite enjoy drawing characters and it’s a challenge to see what comes out. I’ve also drawn the two witches and a witches assistant to help me think how they should look.