So Roxy is linked to cats while other Void players are linked to horses and Dirk is linked to horses while other Heart players are linked to cats. Do you think this has any deeper meaning?

Dirk and Horses are linked because Hussie has stated the Striders to be the closest thing to self-inserts there is, so of course there’d be! Also, Cats, and specially Black Cats are heavily related to Void Imagery, so this makes a lot of sense for Roxy.