In their true form, changelings are pale, with colorless eyes and silver-white hair. It is rare to see a changeling in that form, for a typical changeling changes their shape the way others might change clothes. A casual shape— one created on the spur of the moment, with no depth or history— is called a mask. A mask can be used to express a mood or to serve a specific purpose and then might never be used again. However, many changelings develop identities that have more depth. They build an identity over time, crafting a persona with a history and beliefs. This focused identity helps a changeling pinpoint a particular skill or emotion. A changeling adventurer might have personas for many situations, including negotiation, investigation, and combat.