It sounds like we can expect a long list of classic Spider-Man villains make their presence felt in Silver & Black but according to That Hashtag Show, there will be a few heroes as well. Peter Parker isn't going to be among them (that was to be expected) but we will see Dominic Fortune and Agent Mark Sim. The former has quite a bit of history with Silver Sable and has crossed paths with a fair few superheroes.
In the movie, it's said that he and Sable have a past together so Sony Pictures is following the comic books as the two worked together in the 2006 mini-series Sable and Fortune. As for Sim, he's a Korean-American New Warriors character who doesn't have a huge role in the movie but is leading a team pursuing Black Cat. Fortune is part of his team and they're going to be joined by Powell and Klein.
Chances are that's a reference to Doug Powell and Lorna Kleinfeldt, two members of Silver Sable's Wild Pack. Why they would be after their leader is hard to say, but it could be that this movie deals with her assembling the team. Then again, perhaps Sable will also work with them before realising she needs to team up with Felicia Hardy! Time will tell but share your thoughts on this news in the usual place.