Time to get started on The 7 Essential Questions of Every Beta. So, what should our moderators be like? See this question for more info on moderators. Here's a quote from the answer:
Shortly after the public beta starts (1-2 weeks, generally), the Community team chooses 3 pro tem moderators. They're selected (versus elected) based on a number of factors, one of which is community input from a "Who should the moderators be?" meta post—assuming one exists.
See this question for the nomination of moderators. This question is for discussion about the desired characteristics of moderators.