Bowtruckle
Pickett was a Bowtruckle belonging to Newt Scamander. Although most of Newt's creatures, and his other Bowtruckles, lived in his magical briefcase, Pickett had a special place in Newt's heart, and often found a cosy spot in his top pocket. Pickett's lock-picking skills came in handy on a number of occasions, making him an important member of Newt's team.
