Julie Yamamoto is Ben's ex-girlfriend and now friend. She broke up with Ben sometime between The Ultimate Enemy: Part 2 and The More Things Change: Part 1.In Alien Force and Ultimate Alien, Julie has black bobbed hair with straight blunt bangs, brown eyes, and wore a black T-shirt, mostly hidden under a pink hooded jacket, a white mini skirt and sported white tennis shoes.
In Omniverse, Julie now wears a white T-shirt. Her pink hoodie has light orange, yellow, and white stripes on it. Also, her hair is now longer and is kept in pigtails. She wears long socks with orange and yellow stripes that go up to her knees. She wears pink tennis shoes. Her Asian facial features are more pronounced.
