[8] In 2013, Gunn was cast as Chief of Police John Sanders, in the BYUtv series Granite Flats.

[12] Gunn was then cast as Aitor Quantic in the third and final season of the Netflix original Hemlock Grove,[13][14][15] which premièred October 23, 2015.

[3][16] Gunn has appeared in numerous films and television episodes, and starred opposite James Caan and Paul Sorvino in the critically acclaimed Lionsgate release For the Love of Money.

[17] Gunn is also featured along with Charlize Theron in the thriller, Dark Places, which is based on the novel by Gillian Flynn.

[18][19] From 2008 to 2011, Gunn took a break from the entertainment industry to live on a ranch near Sequoia Park with his then fiancé, writer and producer Jenna Mattison.