Yeah, that's a Viv thing where she just adds shit to character even when it is a) pointless; b) never utilized in the actual show; and/or c) doesn't really make sense with the character. Velvette is a doll Sinner that is the co-ruler of the Entertainment District and the social media overlord while also being a fashion designer and critic, an influencer, and a witch cause she makes potions on the side. She also appears to market a lot of the Vees shit and is the supposed backbone of this group. Oh yeah, and she's a black British Lesbian in her thirties.
Just a reminder, I'm not including her powers/skill-set because they are vaguely tied to the stuff I mentioned above, but it's more like whatever looks the coolest in a specific shot/scene.