We know very little about this pack and it's members, other than that they are Thomas's family (and Lucas) and that they want to officially claim Crescent Lake as their territory, which creates a problem for Malaya and forces her to officialize the Walters Pack in the Werewolf Council.
The pack was first seen when they ambushed Elias, Vincent and Ginger in the woods. After Lucas took out Elias with wolfsbane, the pack surrounded and attacked Vincent and Ginger. Ginger was quick to howl for help, and Malaya and Charlene saved them.
Tom's pack distinctive features are their long curly hairs and their habit of fighting shirtless, wearing only sportwears shorts.