Buffy The Vampire Slayer

BUFFY the vampire slayer is dead, and Sarah Michelle Gellar’s fellow monster-mashers are just sorry they can’t put a stake through the blonde star’s heart, too!

"They felt like Sarah had sucked the life out of them," says an insider. "So they were more than ready to say goodbye and good riddance to Buffy."

Gellar, 26, so infuriated Buffy’s cast during the last week of filming, they were jubilant when she missed the UPN thriller’s wrap party.

She left immediately after filming Buffy’s grand finale — set to air May 20 — to shoot Scooby-Doo Too.

Her absence at the party was felt, but for the wrong reasons.

"The cast was really happy Sarah wasn’t there," reveals the insider. "There was such resentment toward her, they all agreed it was best that she say goodbye on the set."

But that was just the capper to six years of constant boasting from Gellar about her career, her lack of praise for her fellow slayers and a diva-like attitude on the set, say sources.

"Working on Buffy with Sarah was a nightmare!" an insider confides.

"She plagued her co-stars for years with her bad behavior. Sarah acted like a complete witch. She was unfriendly to the cast."

She also ignored the contributions of such co-stars as Alyson Hannigan, who played Willow, and her role in the success of the series.

"Sarah never acknowledged the hard work everybody else put into Buffy," says the insider.

Gellar’s superiority complex earned her the nickname "the Duchess" from the disgusted crew, says another source. She was such a diva, no one dared interrupt her when she was off-camera and on the phone with hubby Freddie Prinze Jr.

"It didn’t even matter if it was time for her to be on-camera," says the source. "Everybody was constantly kept waiting because of her whims."

The last straw came during the final week of filming, when Gellar blabbed endlessly about her career prospects.

"All Sarah talked about was how busy she was going to be," reveals the insider.

"She mentioned all the movie offers she had and moaned about how hard she would have to work for Scooby-Doo Too. The cast felt she was rubbing it in their faces."

But with Gellar finally gone, a good time was had by all at the wrap party.

Revelers included Hannigan, Anthony Stewart Head, show creator Joss Whedon and Austin Powers’ Seth Green, who left the show in 1999, and refused to return for the finale.

Although he’s committed to work with Gellar on Scooby-Doo Too, he just couldn’t bear to appear in the last episode of Buffy with her, reveals the insider.

"It wouldn’t have been a party with Sarah," reveals a source. "There were many happy reunions without her there, and the cast partied long into the night."