— Castis is from old respected house from Palaven and his wife is from relatively new house from Invictus. That shows in their characters: Castis is noble, honor through and through, loyal, everything expected from one of the oldest turian clans; neutral good; his wife knows how hard the colonist’s life can be, she’s really hardworking to the point of stupid stubbornness, as half of original Invictus population died because of diseases, she had a little weak health and was worrying about her children’s, she’ll always put her family first, is a pro prize negotiator; chaotic good. (Their children possess all these qualities but in different proportions)
— Their marriage wasn’t arranged (it didn't really benefit the Vakarian family), his parents never really accept her (they thought he definitely could have find much better) to the point they didn't show up to their family gatherings, young Vakarians (Castis was the only child and the proud of the clan even at such young age, so they left hit the clan’s name) stopped sending invites shortly. That was the first and last time Castis rebelled (but nor Garrus, nor Sol know about this). His wife moved to Palaven to get a better education, became an engineer and return home, but Castis and later pregnancy with Garrus messed her life completely (that was probably the only time they worked as allies). Keeping in touch with family light years away is hard, but the only question they asked was ‘Do you love each other?’ before they gave her their approval. Hard life on Invictus can teach you what's really important. That why Invictus colonists always stand out.
— Everyone know and respect Vakarians because they're kind of a historical figure in building Cipritine (Palaven’s capital) and conquering aka uniting all other clans.
— Garrus’s mom was very beautiful: thin waist, golden plates, green eyes. But that's not what Castis fell for. He fell for her determination, kindness, sense of humour with little cockiness. He adored how she always said truth to the face no matter whose.
— Solana took a lot after her mom. Beautiful and stubborn. She even decided to follow her mother footsteps. She’s a promising engineer (she made mods for Garrus’s rifle which he took on Menae) and even Armax Arsenal is interested in her. After wife’s passing it sometimes hurts Castis that they're so alike.
— As Garrus and his faithful trusting little tail Solana got in a lot of trouble in youth, Castis was disappointed as it seems they didn't take a thing after him, his wife just clicked her mandibles remembering how much the three of them use word ‘damn’.
— Solana is incredibly hot and cocky young lady (on public at least) and Garrus is overprotective older brother which once pointed his sniper rifle at one of her admirers.
— Solana and Garrus sometimes take part at neighbours’ wars with people who somehow mess with their mother’s precious garden near their estate. They're two talented tech experts prone to revenge, who also have a good knowledge of law. They always win.
— Castis always wanted what best to their children even if it seemed he crushed their dreams. But they still love each other dearly. The understanding of it all will come to them when they’ll have their own children.
@garrus you seemed interested in the subject)
