Klaus:
Normally - Nik, Klaus
When your arguing - Big bad hybrid, The great king of New Orleans
Other situations(😉😉💟): My king, Alpha, Alpha Male
When you try to piss him off - Santa Klaus, Saint Nik
Elijah:
Normally - 'Lijah, Elijah
When you're arguing - Hybrids Brother, Noble Elijah.
Other situations - Eli
Try to piss him off - Suit guy, old man.
Rebekah:
Normally: Bekah, Vampy
When you're arguing - The Loyal Sister, Rebekah Mikaelson
Other situations - Rebekah, Beks, Mine
Trying to piss her off - Vampire Barbie, Lissa Dragonmir
Davina:
Normally - Vina
Arguing- Klaus' Witch, Marcel's witch, Mikaelson's witch
Other situations - Davina, Vina
Trying to piss off - Little Witch, Davina the teenage witch, Witchy
Marcel:
Normally - Marcel
Arguing - Klaus' pawn, Fallen King, ruler of the city
In other situations - Marcellus
When you try to piss him off - Marcella, Marcy, King Marcellus/Marcel
Kol:
Normally: Kol, Babe
Arguing- Kol Mikaelson
Other situations - Kol
Trying to piss him off - Cullen, Edward, Koala bear
Hope (when she's 14 duh):
Normally: Hope, Mikaelson,
Arguing: You bloody tribrid, Daddy's girl
Trying to piss her off - Renesmee, Hopeless, Vampire girl, Princess of New Orleans
Cami:
Normally - Cami, Babe, Camz
Arguing - Klaus' therapist
Other situations - Camille
Trying to piss her off - Camilla
Hayley:
Normally - Hayles, Hayley,
Arguing - Princess Crescent, Queen Labonair, Momma Wolf
Other situations - Andrea, Hayley
Trying to piss her off - Wolfie, wolf girl, Klaus' baby mama
Freya:
Normally - Frey, Freya
Arguing - Big Sister Freya, The Family's go to witch
Other Situations - Freya, Frey
Trying to piss her off - Sleeping Beauty