Harry Austin is a taciturn, lonesome 18-years-old guy that can use his sting tail to intoxicate his enemies. He was originally a mercenary who joined the Organization DEMON-Dark to find his older brother, that betrayed him and destroyed their village. The Rangers saw him as a threat, specially Champ because he thinks that Harry is the killer of his creator, but Jacob believed that he has a good heart, forming a close friendship between them.