The Pataphysic Institute (PI) is a prototype MMORPG de- veloped in order to experiment with game mechanics en- hancing the playing experience. In this paper aspects of the design the prototype which support players' expression of consistent interesting characters are reported. The design of these features builds upon results of user tests of a pre- vious iteration of the prototype. The game-play in PI is based on the semiautonomous agent-architecture the Mind Module.