He is aided by his best friend, Stiles Stilinski (Dylan O'Brien), and mysterious werewolf, Derek Hale (Tyler Hoechlin).Casting announcements were made in December 2010, with the rest of the main cast being Crystal Reed, Holland Roden and Colton Haynes playing Allison Argent, Lydia Martin and Jackson Whittemore respectively.Scott now sees his werewolf ability as a gift to protect those he cares for.
Scott is blackmailed into helping Gerard Argent after the latter threatens Melissa's life by becoming a mole in Derek's Pack.
His and Allison's romance then becomes strained due to their conflicting loyalties and then by Allison's increasingly violent behaviour because of Gerard's manipulation of Victoria's suicide.
After Gerard's defeat and rescuing Jackson in the Season 2 finale, Allison tearfully apologizes for her actions, and because she needs space, they break up, but they still care for each other afterwards.
Melissa also learns and eventually accepts Scott's new life.
In the Season 1 finale, Scott and Allison reaffirm their relationship after Allison finds out he's a werewolf and that his lies were to protect her.