His new parents, singer Fergie and actor Josh Duhamel, shared another photo of their newborn son over the weekend.
"hello world!!!! #daddyandmommymademedothis #whatsahashtag," Fergie captioned the adorable image.
Duhamel added his own version of the photo to say "Go Bison!" a nod to the North Dakota State University football team.
"Axl Jack Duhamel Day 1 Life is good :) #paparazziyoucanleaveourhousenow," Duhamel wrote on Instagram Sept. 17.