As a child, Rose Canton would use an imaginary friend, "Thorn" to deflect blame for bad things that she did. Over the years, Thorn developed as a distinct persona in Rose's head. As an adult, Rose was studying biology on the island of Tashmi, where she was exposed to the sap of a jungle root, which transformed her into Thorn. After killing her teacher, Professor Hollis, she reverted back to Rose. Rose returned to America and settled in Keystone City where Thorn headed a gang which harassed The Flash. When she was in control, Rose would approach Jay for help, claiming to be Thorn's sister.
The Amazons of Paradise Island undertook her psychological treatment and apparently managed to rid Rose of the Thorn persona. During the time of her recovery, Rose developed a crush on Alan Scott. Dyeing her hair black, she assumed the identity of Alyx Florin and romantically pursued him, leading to their marriage. Tragedy struck when, on their honeymoon, Thorn returned. The personality of Rose was able to prevent Thorn from killing Alan, but she chose to run, preferring Alan to believe that she had perished in the fire that consumed their cabin. Their brief honeymoon resulted in the conception of twins, the children who were to become Jade and Obsidian. Fearful that Thorn might kill them, she gave the children up for adoption.
Thorn continued to fight Alan, who was still unaware of his wife's alter ego. On the island of Tashmi, she faced her husband and two children, both now adults. To keep Thorn from killing them, Rose fatally stabbed herself in the heart. It has been revealed that Rose Canton had given birth to a third child, known only as Mayflower of the US government-backed team The Force of July. Mayflower has her mother's ability to grow plant life and have them do her bidding. Mayflower speaks with a British accent. The identity of her father has not been revealed. She was killed by Ravan, who was at that time a member of the Suicide Squad, during the Janus Directive affair.
Thorn had limited control over plants, the ability to spin at high speed and knowledge of plant poisons.
Although this character was originally introduced during DC's Earth-Two era of publication, their existence following the events of the 1985-86 limited series Crisis on Infinite Earths remains intact. However, some elements of the character's Pre-Crisis history may have been altered or removed for Post-Crisis New Earth continuity, and should be considered apocryphal.
The Flash Wiki is a FANDOM Comics Community.