Kanon and Shion Ozu

Kanon and Shion Ozu are Coppelion, genetically engineered humans immune to radiation, and two antagonists the anime and manga Coppelion. They were created in a 2018, in an alternate future Japan where Tokyo was abandoned because of nuclear accident that irradiated the entire city. Kanon and Shion were both clones of actress Kuon Ozu, who was later discovered to be a serial killer. Both Kanon and Shion inherited their mother's violent, sadistic personality, first being displayed in their habit of bullying other students at the Copellion training facility (technically considered as JSDF technical school), particularly Aoi Fukusaku, one of the main characters of the anime. After discovering the Coppelion were engineered to have a short lifespan, both Kanon and Shion made it their mission to take revenge against humanity. As of now, in the anime, they are currently aiding the 1st Division in their attempt to blow up the "sarcophagus" around the melted-down Odaiba Nuclear Reactor, sending radiation high into the atmosphere.

Both of the Ozu Sisters were assigned to the "clean-up" unit, as part of a squad led by Haruto Kurosawa. Ostensibly, the clean up units are tasked with removing and disposing of nuclear wastes and other heavily irradiated material. However, they secretly have another function- eliminating "defective" Coppelion. As such, Kanon and Shion much higher levels of combat training than their counterparts in the "rescue units". Like all Coppelion, Kanon and Shion are genetically engineered with other special abilities beyond their immunity to radiation. Kanon's genes were spliced with those of an electric eel, allowing her to create electrical discharges at will, however, if she does this near water, there is a danger she will electrocute herself. Shion has superhuman strength, estimated at about ten times that of a peak human strength, being strong enough to punch through concrete.

In addition to their powers, both Kanon and Shion are skilled in the use of weapons. Kanon prefers to fight from long distance, carrying an M79 Grenade Launcher and a pair of revolvers. Shion prefers to engage in melee combat, being seen using a katana and a set of metal hand claws, however she does also carry a revolver similar to the ones used by her sister. Both Kanon and Shion are also seen carrying a riding crop, though its is implied they use this more to beat up on the victims of their bullying than as a serious weapon.