The Brazingian mind creeper is a grey alien. Members of this species have appeared in If Scrooge Slept In and Mind wipe.
They have a religious tradition of raising their offspring on their planet near the ziggurat so they can harvest the blood of the unwise. (Mind wipe)
In an alternate universe, the Brazingian mind creepers entered through a portal opened by Ebenezer Scrooge's nephew Fred, and gained control of parliament. Their ruler, the great lord Quessux, passed through the portal into Zulu Fortis (formerly London), and began an invasion on the Earth. After the lord Quessux was defeated by the Maldurgians, the Brazingians abandoned humanity to focus efforts on protecting the crystal. The alternate universe's Earth then blew up. (If Scrooge Slept In)
An alien resembling a Brazingian mind creeper appeared in Jordan Riggs' dream, under the influence of Chris and Jack's Inception technology. (PLAN B)