Alyson Hannigan
Alyson Hannigan
Character(s) Trina Echolls
Date of Birth March 24, 1974
Origin Washington, D.C. U.S.

Alyson Hannigan played Trina Echolls in three episodes of Veronica Mars. She is also well known for portraying Willow Rosenberg in Buffy the Vampire Slayer and Lily Aldrin in How I Met You Mother.