If you are creating your own piece, why not make sure it is set in a different world?
In a distant place, full of grotesque characters who make us just that little bit uneasy to keep us intrigued.
Change your physicality;
Then let it affect your voice;
Find different ways of relating to others.
Using the same stimulus for all characters will give your piece a sense of Ensemble, a sense that you are all working in the same style, embodying the same space.
Here, try these.
For more, visit Goya’s Caprichos Wikipedia page.