Task: Question Answering
Input (English): Passage: A troubled and irresponsible man named Nick Wrigley is hacked by criminals who are looking for a bank account code to Nick's boss. The criminals Bill and Harry manage to find his apartment and start beating him for the Internet scam he has pulled on them. They tell him they want their money by Christmas or else they will have their enforcer Eliot beat him up. Bill and Harry leave and Nick decides to run away. Nick is leaving the building when Eliot sees him leaving and chases him. Nick manages to escape when he runs to a North Pole stage where kids meet Santa Claus. He steals the costume for Santa Claus and walks to the bus stop in disguise and goes to his brother's house.
Meanwhile, the house's mischievous 14-year-old Danny Wrigley welcomes his uncle because he has a better relationship with him than any other person in his family. Danny's father however is less than thrilled to see his older brother, while his wife welcomes Nick. Danny's parents, both doctors, are called into the hospital and reluctantly leave Nick to look after their three children. After receiving a threatening e-mail from Bill and Harry that they are currently tracking him down to get the money out of him, Nick ends up having to unleash a virus to throw them off his trail. On Christmas Eve, Santa comes to the house with a device that can freeze time, in order to put the family's presents under the tree unnoticed. An object hits the device, time goes back to normal, and Nick hits him unconscious. They decide to deliver Santa's presents. While Nick is delivering the presents, unbeknown to Danny he is stealing from the houses. When Danny finds out that Nick is stealing he feels betrayed and goes back home in Santa's sleigh. 
Question: What costume is the troubled and irresponsible man wearing while escaping from Eliot?
Output (English): Santa Claus.