The beauty of Season 1 is the isolation. Unlike later seasons where the pack is a unified front, Season 1 is about : Scott & Stiles: The only true "pack" unit based on loyalty.
The "grumpy mentor" who eventually takes the Alpha spark for himself in the season finale. 3. Scott McCall (The New Beta)
In Season 1, Jackson is human, but his physical peak condition and obsession with power make him a dangerous wildcard. Elite athleticism and sheer ego.
The primary human threat and the keepers of "The Code." 5. Jackson Whittemore (The Rival)