He's practically a long-haired young clone of his dad Brian. Unlike his dad though, Danny is also incredibly flexible thanks to his mom Mary who is a yoga instructor and has been coaching him since childhood.
He only started with the bodybuilding practice with his dad in his early teens after being inspired by movies about barbarians.
Him and Nate are pretty famous for their series of short films about "an elven captive and his barbarian master". They also spend a lot of time together in the gym, since Danny works a gym instructor at Fold Club.