I've had an interesting thought regarding Grogar's villain ensemble. At first I had suspected that Cozy Glow was more or less scooped up accidentally as consequence of Grogar teleporting Tirek from Tartarus, but the more I think about it I think Cozy Glow might actually be every bit as valuable an asset. Unlike Tirek, Chrysalis or Sombra, Cozy Glow has an understanding of the power of friendship, which means she is uniquely equipped to help Grogar unite her fellow villains towards a single goal.