Wait, do Heirs have familiars too? How are they related to their aspect?

Heirs seem to be able to get Familiars as well- John sending Liv Tyler in a floating ship with WV and CD, then you have Casey… Then Equius with Arthour. You could sort of put them as sorta Familiars maybe. Witches definitely do though, and unlike Heirs, Witches are related to a big source of contact with their Aspect.