Middle name for Sullivan?

Sullivan (nn Sully) is hard for me to swallow for either sex since it's the name of the character from the Monsters, Inc. movie. James P. Sullivan is the name of the monster who goes by Sully. So I associate it with a cartoon, kind of like Fiona for Shrek or Ariel for Little Mermaid. I for sure like it better for a boy but definitely NOT a girl. That'd be like naming your son Courtney when clearly it's now a girl's name. I would hesitate with Sully as well since Monsters, Inc. is coming out with their next movie in a year or two. She might have that association which I wouldn't care for but it's totally up to you. Good luck.