From SuspireWiki

Whips serve a tedious and unsure purpose. On one hand, they are the ones most likely to organize a gathering of the clan, and engage the Clan in debate and discussions as well as organize any lines of communication, but on the other, this often puts them in direct contention with the clan's Priscus.

In the Invictus... Whip is a Title of Function given to vampires who possess the city title of whip.