In the in-universe years since the end of The Vampire Diaries and the beginning of Legacies, Jeremy has become somebody who helps Alaric out in case a problem arises beyond the walls of the Salvatore School that isn’t really suited for the local cops.
Yes, Steven R. McQueen is reprising his role as Jeremy for Legacies.
According to series creator Julie Plec in a chat with TVLine, Jeremy is “someone out in the field.”
He’ll appear in the third episode of the first season, called “We’re Being Punked, Pedro.”