Is it possible we don´t get any other villains besides Hulk, Jean Grey, The Hand, Scorpion, Tombstone, Damage Control, Boomerang and Tarantula?

I know there are rumors of Jackal and 8ball, but they haven´t been in any of the footage, and is it possible rumors of Jackal for instance came from the Green Jackal beer reference?

Someone probably told someone that there is a Jackal reference in the movie, and it turned into Jackal is in the movie.