By far the most fun emotion around has to be Joy! Joy is a good sport with a caring heart who loves the world and all who inhabit it. Although Joy generally spends most of his time with Anger and Disgust, he sometimes gets along with Fear and Sadness, but not usually for a long period of time. Joy doesn't spend much time at the console, but if he sees Steven Universe, Pastel's crush, or anything shiny and bright, he'll be at the console pressing every button he can get his hooves on!

Joy is rather lonely in Pastel's head, as Anger, one of his only friends, is rather difficult to relate to. Some things that excite Joy, just rub Anger the wrong way. So Joy and Disgust are more likely to spend time together. Joy tries to get along with Anger though, because Disgust likes him, so Joy should at least try to be civil.

Pastel is here: http://www.furaffinity.net/view/17374051/