26 - What are their vices?

OUGH. Many of their vices directly feed back into their virtues in an ouroboros but that can be said of many people/characters.

Darcy - curiosity, dedication to a purpose at the exclusion of MOST other things, thinking she's always right (she is often right. however. don't be a fucker.), stubbornness, taking care of other people too much, is kind of goddamn reckless and assumes she can think her way out of any situation. i should give her some more vices/flaws tbh, i'll work on that

Vash - passive (common) and active (less common) forms of self-destruction, alcohol, "deserved" punishment, saying sorry too much, aimlessness, dedication to a purpose at the exclusion of all else, refusal to process anger productively or really at all, convincing himself he must be alone for the scales to balance correctly, is kind of terrible with money actually. i'm loathe to label most of his Coping With Being What He Is as a vice, so i won't. the alcohol is here because it is a problem that it's one of his only hobbies, regardless of how much it is or isn't a coping mechanism.

28 - What are there thoughts on pet names? Do they have any?

hi. yes. of coursseeeee. Darcy is a Nicknamer which means she had a nickname for Vash within 24 hours of meeting him - Sunshine, for the hair, but also Sunshine, for the smile and the general ease of being around him, even when he's being a bit odd and trying so hard to pretend he's Normal Normal Normal. it only gains more credence based on the fact that he burns noticeably warmer than the average human (because he isn't and also is a nuclear generator sewn into a human sock puppet) - which she didn't know at the time of giving it to him. She has a couple of others and will mimic other people's nicknames for him from time to time but Sunshine is ol' reliable.

Vash is less of an overt nicknamer but does like nicknames very much, they feel so special and individualized. Darcy has a threadbare little stuffed cow (one of her only possessions from childhood) named Clover and that was sssssoooo fucking cute when he found out but also something Vash could be annoying about, so he started calling *her* Clover as well. He also consistently referred to her as Miss Tanis to be a bit cheeky in their early days together where she was technically His Employer/Boss.