This sounds like the beginnings of an epic story! I hope you’re having fun developing your world and characters.
I would be interested to know more to know how to best help you, but I understand you might want to keep many of your details to yourself.
Here are some of my questions that my help with more specific naming ideas …
Is there a specific time or place this story takes place in? An ancient past or the future? Realistic or high fantasy? Would the characters of your story be familiar with human history and mythology or are the legends of their world completely their own (either either with no knowledge of the known human world or no knowledge because the human world we would recognize doesn’t exist)?
Are these characters all directly related (i.e. mother, father, siblings, child of, etc.)? [name_f]Do[/name_f] they have drastic age differences or all they all pretty close in age?
Have these characters been given these names by their royal family at birth / at some important time in live or have they given themselves these names (i.e. a chosen name like a nickname or a name / title they have claimed for themselves inside or outside of family traditions and conventions)?
Would the characters know any of the origins (real or fantasy-based) behind their names or would their names be fully original to them?
Again, you don’t need to share anything else about your story, but it would be interesting to know.
Here are my thoughts on the names listed and suggested so far. I have also suggested some names with mixed backgrounds and roots just to see if anything strikes your fancy.
Envy (Female) … [name_f]Livia[/name_f]
[name_f]Livia[/name_f] seems to be a more modern name than the others. I have a feeling this is intentional. Is it? If not, I might suggest looking at some other options though you seem set on both this name and [name_m]Kian[/name_m]. However, [name_f]Livia[/name_f] can easily be a nickname with a more traditional given name.
Some Other Suggestions: Etaine; Lampetia; [name_f]Lavinia[/name_f]; Leviathe; Livius; [name_f]Lucasta[/name_f]; Porphyria; [name_f]Portia[/name_f]; [name_f]Ophira[/name_f]
Pride (Male) … [name_m]Kian[/name_m]
[name_m]Kian[/name_m] seems more modern, but to a lesser degree than [name_f]Livia[/name_f]. However, it feels rooted in more traditional longer names so it feels authentic.
Some Other Suggestions: Abigor; Ashmit; Fikhar; [name_m]Kelvan[/name_m]; [name_m]Titan[/name_m]
Greed (Male, unknown color – [name_u]Green[/name_u]?) … Midas
Midas is a great full name, though I will agree with a previous post that it feels a bit on the nose. However, if you’re creating your own rules the name could be the perfect, weighty choice.
Some Other Suggestions: Corvus; Gifre; [name_m]Isidore[/name_m]; Licciardi; [name_u]Onyx[/name_u]; [name_m]Orin[/name_m]; [name_m]Phoebus[/name_m]; Reissig; Taronish
Wrath (Female, unknown color) … Nestra
Nestra is such a rich name. It feels older than [name_m]Kian[/name_m] and at home with Midas, but like [name_m]Kian[/name_m] it also feels viable and new instead of mythic like Midas.
Some Other Suggestions: [name_f]Acantha[/name_f]; [name_f]Clytie[/name_f]; [name_f]Electra[/name_f]; Gorgon; Indivia; Kasdeya; Orusula
Gluttony (Male, [name_u]Orange[/name_u]) … TBA
I really like [name_f]Revel[/name_f] as a previous suggestion, though [name_f]Revel[/name_f] may feel modern as well.
Some Suggestions: Azazel; Durmada; Frack; Garvish; Garvit; Gaurava; [name_m]Odin[/name_m]; [name_m]Riordan[/name_m]; Tumulty
Lust (Male, [name_u]Red[/name_u]) … TBA
I love the simplicity of the previously suggested [name_m]Wil[/name_m] and how the name plays directly with the idea of will. This name may also feel a bit modern.
Some Suggestions: Aeson; Asmodeus; Baren; Detinos; Drave; [name_u]Kamari[/name_u]; Nirvaira; Risanth; Samael; Sharnaz; [name_m]Tyr[/name_m]; [name_u]Zephyr[/name_u]
Sloth (Male, [name_u]Blue[/name_u]) … TBA
I am also stuck on Sloth options. From a previous post I like Almos best but it feels strange with the other names.
Some Suggestions: Agarva; [name_m]Aldo[/name_m]; Baysan; Belg; [name_m]Bode[/name_m]; [name_m]Bradon[/name_m]; Grassel; Graessle; [name_m]Hale[/name_m]; Keneder; [name_m]Morey[/name_m]; Morfran
I hope this helps! Good luck writing!