Rex Buckland

"Rex Buckland" was the identity used by a warlock who's mission was to destroy the Charmed Ones. It was the name of the successful owner of Buckland's Auction House. He was murdered along with his coworker Hannah Webster by two warlocks who assumed their identities. The warlock Rex was sent by The Source to confirm the true existence of the alleged Charmed Ones. To do this, he hires the eldest sister, Prue Halliwell. Rex and Hannah kept watch over Prue for many months. Rex had the powers of astral projection and telepathy, both of which he would use to plant thoughts in others' minds to convince them to think or say a certain thing. ("Wicca Envy")

Rex and Hannah are the show's first reoccurring villains, lasting for the first half of the season. During that time they help Hecate in her marriage scheme, are nearly victims of Prue's truth spell, and unleash the evil warlock Matthew Tate on the sisters. ("The Wedding from Hell", "The Truth Is Out There... and It Hurts", "The Witch Is Back")

Rex and Hannah waited until they saw an opportunity to steal the Charmed Ones' powers. Rex used his astral projection power to set certain events into motion. He was able to manipulate the Charmed Ones into surrendering their powers by framing Prue for the murder of a security guard at Buckland's. Knowing it was the only way to save their sister, the Charmed Ones relinquished their powers, which flow into a lantern provided by Rex. Rex has Hannah morph into a black panther to kill the sisters. However, Piper was able to freeze her due to the intervention of the whitelighter known as Leo Wyatt. Prue then uses her power to force Hannah to attack and kill Rex. Hannah dies almost immediately due to The Source vanquishing her for her failure. ("Wicca Envy")

Note
Inspector Andy Trudeau discovers at near the same time as the warlocks' final failure that the original Rex Buckland and Hannah Webster are now dead and their names being used as ailases. He also uncovered evidence that the warlocks had been skimming off the auction proceeds, nearly driving Buckland's into bankruptcy. This turned out to be what actually exonerated Prue of the crimes the warlocks had framed her for.

Appearances
Rex Buckland appeared in a total of 6 episodes throughout the course of the series.
 * Season 1 -
 * I've Got You Under My Skin
 * Dream Sorcerer
 * The Wedding from Hell
 * The Truth Is Out There... and It Hurts
 * The Witch Is Back
 * Wicca Envy