Mad Men star John Slattery has been added to the cast of Seth MacFarlane's Ted 2.
The actor, best known for playing Roger Sterling in the acclaimed AMC drama, joins the upcoming comedy in an as-yet-undisclosed role, according to Entertainment Weekly.
Mark Wahlberg is reprising his role as John Bennett, while MacFarlane is again voicing the character of Ted.
Amanda Seyfried is playing the female lead, while Morgan Freeman, Liam Neeson and Dennis Haysbert will also appear.
Ted 2 is scheduled to open in July 2015.
