From Pizza Tower Wiki

Before Pizza Tower was finished, many concepts surrounding Noisette were pitched but ultimately scrapped.

Shop keeper

The current version of Pizza Tower has Noisette in her own Cafe as an easter egg, and in The Noise's campaign she takes over Mr. Stick's role of opening boss gates. Previously, she was considered as a shop keeper, allowing the player to purchase a shotgun and other various items in exchange for Pizza Points. This concept was never finalized, but many comics exploring the idea were drawn.

Miscellaneous concept artwork