*Helen (ヘレン, Heren?) is a character that appears in the Sonic X anime series and its comic series published by Archie Comics. She is one of Christopher Thorndyke's closest friends, and one of the few humans who readily accepts Sonic the Hedgehog and his residential friends from the beginning. Helen was born with a condition that restricts her to a wheelchair and has spent much of her life as a paraplegic.

Helen is a young human girl with peach skin, wavy blonde hair with bangs, and aqua eyes. As a child, Helen wears a short-sleeved white shirt with a light pink stripe on the sleeves, and a lime green ribbon below the collar. Over that, she wears a pink vest, which is buttoned by a light pink button. She also wears a short light pink skirt with a darker pink stripe near the bottom, and white and light pink lace-less sneakers with gray soles, without socks.

Helen is a young girl who, despite being confined to a wheelchair, thrives for adventure. She showed very little fear when Sonic pushed her chair faster than anyone else and carried her up high, laughing when she and Sonic nearly fell off a cliff. She is also a very kind and considerate person. She can talk for a long time and in detail about her life adventures, which are something special to her. Helen is also strongly associated with nature: she has a huge love for flowers and enjoys catching lizards, snakes, and bugs.

Because of her paralyzed legs, Helen has limited physical skills, which forces her to ride in a wheelchair.*