Battles of the Mechacyberoids is a setting that I just came up with. Years ago, at the old (now defunct) Goblinoid Games forum, we were fooling around with the character generation system used in Mini-Six during its beta-testing stage. We were making stats for all sorts of characters, established and original. Among them, I managed to make stats for some of the Gen-1 Transformers, namely Optimus Prime, Ratchet, Bumblebee, Megatron and Starscream. One of the key things with this was the use of scale. In the rules, scale determines size and firepower (and the resistance there of). Bumblebee had the smallest scale in any form, while everyone else were huge in size. Although, the rules did not cover scale in chargen, it was a neat gimmick. After that, I have been thinking about a Transformer-inspired that was different enough to be its own thing. Only until now, did it hit me...
This setting is a cross between super sentai fiction (think Voltron and Power Rangers) and cartoons with giant transformable robots (Transformers; Go-Bots), with some magical girl transformations (Cutie Honey; Sailor Moon). I wanted to make a setting about giant transformable robots, but to do so, without being reliant on human sidekicks — such characters, often teenagers, were used as intermediates between the young viewers, and the strange alien robots. I wanted the action to jump between human-scale and mecha/vehicle-scale without having to change characters. One of the key ideas came from Transformers: Headmasters; a strange take on later Gen-1 Transformers, where alien humans had the idea of turning Cybertronian heads into transformable exo-suits, allowing humans to serve as a supporting brain, while leaving the Cybertronian in alt-mode (vehicle mode) when not together. I just dropped the human partner, and made it so that the giant robot can detach its own head in order to transform into an artificial human. "Mechacyberoids" is a working title, but it is based on the long-winded titles found in a lot of old '70s-'80s giant robot anime.
In this setting, some alien cyborg drones called the Mechacyberoids, who in their natural state, resemble giant robotic bugs, found their way on earth in the late '70s to early '80s. They were on a mission by their master, the dreaded Cybergorgon, to secure an artifact (a blue gowning dodecahedron) that is believed to had fell on earth. While there, they discovered a strange form of life that could threaten the mission. Initially, they though the machines and cities were a living hive collective. Without a means to communicate, first contact was not pretty. They damaged cities, killed bystanders and had a deadly conflict with the US military. To understand the treat better, they took on new forms. Initially, they formed into vehicles and moved aimless round cities and highways. On further examination, it was revealed that smaller beings that called themselves "humanity" were in control. From there on, they separated their own heads form their bodies, and human form...
After years of close contact, the Mechacyberoids began to understand humanity better and became enamored with human idols and culture. They exist in two bodies: a human form; and a telepathically-linked vehicle. Their human body is mechanical, covered by life-like holographic skin. They have the ability to pull out weapons and tools from out of nowhere, and to transform into "soldier mode." The transformation is vary much like Cutie Honey, and when done, they are in a cool outfit, covered in armor plating and assessors (HUD-set, hover-feet, jet packs, bunny-ear antenna, utility belt, etc.). Their vehicular body can change into "battle mode", where weapons and other equipment (wings, ram-plates, grapple arms, etc.) fold out of the body. The transformation is vary much like M.A.S.K. When the threat gets too big, they can transform their vehicle bodies into "robot mode", jump onto the torso to transform their human body into the giant robot's head. Their giant robot bodies resemble the classic Transformers. Their giant robot bodies are build and armed for battle. Unlike Transformers, their vehicle forms are not fixed to one type of vehicle, but change their alt-mode takes time to scan and reconfigure. And also unlike Transformers (which never had any concept of scale), they are bound by their default size.
They can also combine freely, creating "Gestalt" (aka Combiner) forms form nearly all combinations of fully-formed giant robot Mechacyberoids. A Gestalt form increases the size and power by the number of Mechacyberoids formed into it. The only problem is that all the joined Mechacyberoids form a telepathic link, and they all need to be unified in thought and action in order to function. Normally, in the past, Mechacyberoid drones could work freely in this mode in great numbers, but the differing identities that came with human contact, had made this a difficult feat. (This is vary much like Fusion in Steven Universe, but more mechanical.)
These earth-bound Mechacyberoids pass off as normal people, living one human lifestyle or another. Although, unable to start families, they do engage in human relationships. They have no sense of gender or sexuality, but they have embraced such concepts and take on these identities as part of their "human role." They have two names: A "human name" that is part of their human identity; and their "true name" that would sound like a strange nickname to most people, but is the name chosen, and used with each other, that reflect their unique identity or dispossession. For example, a transformable dump truck was named Granite, as "he" is a stubborn oaf who throws his weight around, without an ounce of grace. As a human, his false identity is Arnold James Bolton, a construction worker from Mechanicsburg, Ohio. Despite their attempts as being as human as possible, they tend to exaggerate what is expected of them in their human roles based on what they see in media. For example, a Mechacyberoid living as a normal husbands, might emulate a fictional husband from an old TV sitcom (smoking jacket, penny loafers, and all). A Mechacyberoid who wants to "protect and serve" might join a local police department and act out a fictional TV/movie cop (short fuse, over-sized pistol and all), or dress in a loud outfit and fight crime as a costumed vigilantly (cape, tights and all).
As enamored they are with human ways, they all know that if Cybergorgon finds the earth, he will consume it, turn it into a dead planet. He would also see any free-thinking Mechacyberoid as an abomination that would infect other Mechacyberoids with its corruption, and thus destroy any humanoid Mechacyberoids. And if he gets the artifact, he would become an unstoppable force in the cosmoses. As such, there are four factions with the earth-bound Mechacyberoids: The Guardians; The Renegades; The Rogues; and The Loyalists. (all are working titles)
The Guardians were founded by a noble leader who dreams of a future were humans and Mechacyberoids live together in harmony. Their primary goal is to keep the earth a secret form Cybergorgon, and to keep the artifact from him. They also seek to defend the earth, when Cybergorgon's forces come looking for answers.
The Renegades are ruled be a power-hungry despot, who wants to secure the artifact, in order to defeat Cybergorgon and take his place as the master of the galaxy. Followers are drawn be the more proactive defense against Cybergorgon, and are more willing to sacrifice the earth and its people, if need be. They look down at humans for being weak on all levels. As the Guardians and Renegades cannot see eye-to-eye on most things, they are always at conflict with each other.
The Rogues are, for the most part, self-indulgent hedonists. They do want to keep earth a secret, but they do not want to engage in outright rebellion. They would rather lay low and hope Cybergorgon forgets about them. They have no leader or unified ideals. They mostly operate as gangs. They make up the majority of Mechacyberoids on earth.
The Loyalists want to continue the mission and hopes that Cybergorgon would forgive them for the delay. As they are seen as a threat all other factions, they operate in secret, trying to rebuild the communication network damaged by Guardians and Renegades forces. They have no regard for humans. Thankfully, they are few in number.
Cybergorgon resembles a large spaceship with three mechanical dragon heads, each mounted on a long articulated "Doc Ock" styled neck. Without any human contact, he has not concept of empathy or free agency. As he built this Mechacyberoid as semi-autonomous tools, he expect all his drones to serve him, and sacrifice themselves, if need be, without hesitation.
So far, it is a premise with a lot of room to build upon. I have no idea when I'll make a sourcebook for this, and I want to stock it with some key players and items. As this is new, I'm still coming up with new ideas, and even this basic premise would likely face revision.