Nico Tremlett is the second son of Donaghan Tremlett and Meaghan McCormack. He was born in 2002, and has an older brother, Chairo Tremlett, and a younger, Zeno Tremlett. He was sorted into Slytherin in 2013. Nico is a friendly person with a 'clever' sense of humour. He is cousins with Petra and Luca Duke.