Jordan Masterson (regular, seasons 2 -- 6) and Nick Jonas (guest star, season 1) as Ryan Vogelson, Boyd 's Canadian father: Though Ryan initially fled when Kristin got pregnant, the two reconciled and got engaged at the end of season 3. Ryan holds staunchly liberal views, both politically and philosophically. He and Mike routinely clash over their fundamentally opposing values, especially when it comes to child - rearing. Mike is often quick to point that many of Ryan 's atheistic and liberal views are hypocritical. Ryan wishes to raise his son without religion and patriotism, but neither Mike nor Kristin allow this. His vegan diet, political correctness, views on discipline, and general sensitivity are an affront to Mike 's beliefs. On rare occasions, Ryan agrees with Mike on what is best for Boyd 's future, but this usually winds up creating rifts with Kristin or Vanessa.
who played ryan in the first season of last man standing
Nick Jonas