Give some stream of consciousness and then the answer. Passage: Henry Daniel Mills is a fictional character in ABC's television series Once Upon a Time. Henry is the boy Emma Swan gave up to adoption; Regina Mills adopted him. Henry was first portrayed as a child by Jared S. Gilmore, who won the Young Artist Award for Best Performance in a TV Series -- Leading Young Actor in 2012. Starting with the seventh season, Andrew J. West will take over the role of Henry as an adult and father to a ten-year-old girl named Lucy.\n\nQuestion: Based on this passage, henrys last name on once upon a time?
User
The relevant information is: Henry Daniel Mills is a fictional character in ABC's television series Once Upon a Time.
Therefore, the answer is Mills.
Assistant