TMZ.com

The bond between Bryan Cranston and Aaron Paul is so strong that it was a no-brainer to choose his baby's godfather.

We caught up with the costar of the show at the airport and asked about naming his best friend.

Bryan is more than deserving of the title he and his wife bestowed on him, says Aaron.

As far as what it takes to be a godfather, Bryan is going to be on diaper duty.

Bryan Cranston and Aaron Paul -- Best Buds Getty

It is no surprise. It's nice to see the friends grow tighter through the years.

In case you didn't know, the couple tied the knot in 2013. They became first-time parents when they gave birth to their daughter.

They welcomed their second child and only son this month, and we already know he will be in good hands.