A while ago I slapped together a very rough animated storyboard, of some ideas I had for the opening of the show.
I came across a really crappy quick sketch I did a long time ago and really liked the unicorn having legs.
Since then I have been toying, get it, with making the unicorn a straight up unicorn instead of a big-wheel. If he has legs he will be able to do more stuff, like pick his nose. The possibilities are endless really.