Roll Caskett is a character from the Mega Man 64 based on Roll from the original Mega Man series. She was raised by her grandfather, and is best friend's with the main character, Mega Man Volnutt. Roll is a caring person and is always concerned with Mega Man's safety when he is on a digout.
Roll is an enthusiastic genius mechanic and can create, repair, modify, and pilot almost any type of machine. She is in charge of piloting and maintaining her family's airship, the Flutter, and is shown piloting other vehicles. Roll is also Mega Man's Spotter; she gives him information via radio based on what she can see with her equipment. She builds new parts for him, including Special Weapons and Buster Parts, from what he finds on his digs.