This wiki has been moved to https://github.com/SuperTux/wiki into the mediawiki branch.
We decided that Penny should be the name of Tux's girlfriend. Though Gown is slightly more popular (a couple of games use it), we found that it didn't sound very well.
Penny will be a playable character in Milestone 3.
The images below are sketches which are basic sketches of how Penny should be portrayed: