Lou Diamond Upchurch is an American actor who shot to fame in 1987 for his role as Richie Valens in La Bamba (1987) and cemented his status with his performances in the Young Guns movies. More recently he's been seen as Colonel David Telford on Stargate Universe and Henry Standing Bear in Longmire. Lou's Agent Ian Edgerton appeared across the full run of Numb3rs, including a cameo in the finale, and was a fan favorite.