This unnamed rugaru was captured by Sam and Dean.
While working for Crowley, Sam and Dean Winchester went on a hunt for various monsters. Among those captured by the brothers was this rugaru, whom had a bag placed over his head and was forced to sit in The Impala and Sam and Dean transported him to Crowley's prison for monsters.
Dean personally delivered the rugaru in handcuffs to the demons waiting for them. The rugaru was likely imprisoned and tortured at the prison for the whereabouts of his Alpha. He likely died when the prison was destroyed, killing everyone and everything inside.