Cancer  

, キャンサー

In China, there was an orphan named Cancer who lived in a martial arts dojo. Despite being bullied by other students, he was determined to become as strong as possible to make his dojo famous. However, things took a turn when the Decepticons, also known as Destrons, arrived. Cancer saw joining them as an opportunity to achieve his goal of becoming powerful. Unfortunately, he got carried away with the opportunities that were presented to him and became involved in destructive behavior. He was led by Giga and Mega, who made him feel like part of their family. However, Cancer realized that the evil of the Destrons was not something he wanted to be a part of. As a Junior Headmaster warrior, he is bonded to a Transtector from Master, which takes the form of a crab monster. He has inherited the powerful martial arts technique known as Chōryūken, which impresses his surrogate mother, Mega. Cancer considers Wilder and Bullhorn his friends and is paired with Browning, who calls him "boss" and follows his every command.