Purah

Purah is one of Metatron's most loyal angels who was recruted by Gadreel and who, along with Asariel, guards the portal to Heaven which was in a playground, using a child as a vessel. In order for Castiel and Gadreel to gain access to Heaven, Castiel having gained knowledge of pop culture has Gadreel take him "prisoner." However Asariel and Purah tell Gadreel they have orders from Metatron to keep the door closed to all of Angels, on Heaven and on Earth. Gadreel refutes them by telling them it was Metatron's order to capture and bring Castiel to Heaven for questioning. Asariel and Purah begrudingly agree and go about drawing the spell in a sandbox, and allow Castiel and Gadreel passage to Heaven.