yes! for the brother, i have him in the age range of 33ish, and i've said he's a bit of a thot, less serious than chase who is not serious at all. their family owns a large multinational hospitality company (marriott) and their father is ceo, but is looking to retire in the next year. he's recently brought on both kids in active roles and he's gearing up to pin them against each other, more or less.
as for the step sibling, their mother is a fashion designer 15 years his father's junior, but they've been married since 2004. they became really close from spending holidays and vacations together, but generally act as siblings do with the bickering here and there.
cousin-wise, i wanted a paternal cousin that's in the same vein as his brother, looking to come up in the company and get in on the family fortune and fame.