so that it doesnt seem weird to other people that they are all "together" while being "siblings"
...and since they are all adopted, it would seem logical that they all have different last names.
carlisle Cullen,Esme Cullen,emmet Cullen,Edward Cullen,rosalie Cullen,jasper Cullen and Alice Cullen
Carlisle Cullen and Esme Cullen as vampires but, the names of his real parents are Edward Mason and Elizabeth Mason.I hope i Helped you and if you need help with more about twilight message me.
They already had last names for when they were changed to vampires so they didn't change there names for when they became apart of the Cullen family
Carlisle CullenAlice CullenEsme CullenEmmett CullenJasper HaleRosalie HaleEdward CullenBella Cullen / Bella SwanRenesmee Cullen (half human/half vampire hybrid)MarcusCaiusAlecLaurentVictoriaJamesThese were only listed at the end of Breaking Dawn:KachiriSennaZafrinaEleazarCarmenIrinaKateSashaTanyaVasiliAmunKebiBenjaminTiaMaggieSiobhanLiamStefanVladimirAroSulpiciaCaiusAthenodoraMarcusDidymeJaneDemetri
Esme Cullen, Carisle Cullen, Edward Cullen, Emmett Cullen, Alice Cullen, Rosalie Hale, and Jasper Hale.
James, Victoria, and Laurent are the three nomadic vampires in Twilight. None of them have the time for last names, apparently. :)
The mean vampires in Twilight are called the Volturi. They are an ancient and powerful coven who enforce the laws of the vampire world. Led by Aro, Caius, and Marcus, they are known for their ruthless and unforgiving nature.
Edward Anthony Mason Cullen
Emmett Cullen and Jasper Hale.
Emmett Cullen and Jasper Hale
James, Victoria and Laurent
Carlisle Cullen, Esme Cullen, Edward Cullen, Alice Cullen, Jasper Hale, Emmett Cullen, and Rosalie Hale. In Breaking Dawn, Bella and Renesmee Cullen join the Olympic coven.