Cancer (robot)
- Cancer is a Decepticon from the Generation 1 continuity family.

Cancer (キャンサー Kyansā) is a former transtector who gained life from and independently of his former owner, Cancer, via the power of Masterforce. As such, Cancer takes after the human's personality.
Fiction
Japanese Generation 1 cartoon continuity

Super-God Masterforce cartoon
The three former Decepticon Headmaster Juniors, along with Clouder, accompanied the Autobots to the Grand Canyon on a mission to stop the composite Devil Z/BlackZarak entity. During the battle, however, all four of them were struck with a blast of the villain's Devil Power, and were shocked to find their Master-Braces had disappeared from their wrists. Devil Z had, in fact, separated them from their transtectors and brought the robot bodies to life as true super-robot lifeforms, all four of which rejoined the Decepticon side. Autobots! Desperate Attack!! After God Ginrai destroyed Devil Z, all the other Godmasters and Headmaster Juniors were also separated from their transtectors. Cancer's living Transtector departed Earth with all the other Deception transtectors, and was pursued by the Autobots' Transtectors to carry on the Transformers' war in space. A Battle... and Then...
Victory cartoon
Cancer continued battle under the command of Overlord against the Autobots led by God Ginrai in G Nebula 89. Planet Micro - The Mysterious Warrior
Super-God Masterforce comic
With Devil Z's death, the bond he had forged between the humans and their Transtectors was severed, and the Transtectors themselves were truly brought to life. Giga and Mega were revealed to have also been sustained by Devil Z's energies, and his death brought about their own passing, to which Cancer reacted tearfully. Cancer's Transtector subsequently departed for space along with all the others. The Birth of the Super Life-Forms
Kre-O comic

Cancer looked in confusion at the massive golden effigy of Megatron's head. Megatron's Ambition!? The Solar Tower Is Built!
Toys
Fight! Super Robot Lifeform Transformers

- Cancer (Headmaster Junior Monster, 1988)
- ID number: D-303
- Accessories: Transtector, "Aqua Blaster", "Tail Sword"
- Released in the fourth year of Takara's Fight! Super Robot Lifeform Transformers line under the Super-God Masterforce banner, Cancer is identical to the Hasbro-release Lokos; a small armored humanoid that transforms into a robot head compatible with any Headmaster body.
- He comes with his Headmaster Transtector, which is identical to the Hasbro-release Squeezeplay, transforming into a monstrous bipedal crab-cobra-creature-thing. The Cancer Headmaster figure fits in a cockpit in the Transtector's stomach in its beast mode. The creature's tail disconnects and becomes a weapon for robot mode that sure as heck looks like a double-barrelled gun, but which is referred to as a sword in Cancer's Tech Specs.
- Like all Headmaster toys, Cancer's robot mode features a spring-loaded mini-Tech Spec meter in its chest, which gives readings for Speed, Strength and Intelligence (although he and the other Decepticon Junior molds are unique in that their meters are not covered by flip-down panels). The meter is activated when Cancer (or any other Headmaster unit) is plugged into the neck socket; as a small Headmaster, all three readings are on a single tumbler, so any head plugged in will result in the same stats.
Notes
- Kre-O Cancer uses the same helmet as Ironhide, and has a backpack piece to simulate his Generation 1 counterpart's beast mode kibble.

