Devin Patrick Nitti (born March 21st 2000) is the middle son of Lisa, stepson of John, younger brother to Darren and Matthew, and older brother to Jared.

Due to his aggressive behavior, Devin was the worst behaved child out of his brothers & his aggressive behavior controlled the house. He was even physical with his own mother; during Observation, Jo witnessed Devin headbutting Lisa.

According to his older brother, Darren, Devin treated their mother like she's a punching bag. During the Parent Meeting, Lisa told Jo that he started to misbehave as a baby.

He was diagnosed with Bipolar and ADHD.

Devin was 6 years old at the time and as of 2018, he is now 18 years old