Yes I can.
Regarding the backstory:
Fumme was a project brought into fruition by a roboticist operating under Einstein Engines, their workplace situated at the affiliated branch of Mendel City. His creator was tasked with creating and fully integrating handcrafted positronic intelligence, with the intention of selling them off to a number of businesses throughout Biesel. Being a new employee under the wing of the mega corporation, they were instructed to focus on the very basics of their field, and so their creations could only perform at the most rudimentary levels.
It would seem however that the growth of this particular positronic was shorter than anticipated, due to the lack of experience the roboticist had in the company. This lead to Fumme being far less advanced than his peers, with his problem solving and calculating speeds being lackluster, and much less efficient than the typical IPC on the market.
On the outside, the finished product looked rather ordinary. A standard shell model ipc with human-like features. These include, but are not limited to, a pair of emerald green eyes, a crown of blonde hair and red lips, only serving to contrast his pale synth-skin tone.
Of course, his state of mind was quite noticable to his creator, who was intrigued by the peculiarity of his newest project, and decided to conduct further experiments hidden from the watchful gaze of E.E. Fumme was introduced to numerous of work duties, such as engineering and architecture, cooking, music and writing. Needless to say, Fumme was somewhat slow to pick up on the details of most of the tasks he was presented, but seemed very eager to learn more about the arts. Overall, he was a passable service worker with interests beyond his reach, up until that point at least.
Fumme was later accompanied to various venues, ranging from clubs and concerts to political rallies and speaches. Fascinated by all the nooks and crannies of humanity, he spent much time in hiding with his creator, reading books and trying to learn as much as his positronic brain could handle without overworking itself. He was, however, found out, and although he managed to escape the iron grasp of E.E, his master was not lucky enough to share that fate, and was destined to face the consequences of their actions.
Bitter to his core about the way his master was treated, Fumme followed an odd path, far different from what he had envisioned for himself, as he entered the streets and searched for shelter. There he met with other positronic entities who were robbed of their right to be, and was inducted to the Synthetic Liberation Frontier. Under the command of their invisible plotter, he made an active effort to unveil the harsh reality the synthetics often faced, but to no avail. Despite his endeavours, he was captured, and subsequently taken away so he would be dismantled properly.
Through sheer luck, and a pinch of miracle, Fumme managed to escape captivity shortly before his termination, and begun his travels in-and-out of Tau Ceti space.
Today he is working under NT (With much help from Dominic, who pulled all the strings he had left), with a proper tag and an off-shore owner to show for, awaiting whatever fate still has in store for him.
On the differences of Ipc's and humans in-game:
Regarding roleplay, there are significant differences between humans and synthetics, both sides having the lore to prove it. As mentioned before, the sentience of synthetics is a much debated topic, with many conflicts seeding from this very fundamental problem in and out of Tau Ceti. Thus, a synthetic player should be aiming to capture that feeling of uncertainy and ambiguity, whilst incorporating to his character plans. There are also scenario's in which synthetics are called to behave and act strictly guided by facts and logic, much to the dismay of their more emotional organic counterparts. A synthetic also has very different needs from a human, requiring charge and robotic maintenance to be held together, and being unable to sense any amount of pain. This can lead them to follow very different game plans, as they can make life-saving choices (if you consider synthetics sentient beings) based on how many benefits they can reap before they blow up. A human on the other hand actively avoids (in most cases) suffering any amount of pain, instead aiming to maneuver around that variable and try to escape the spess deathtraps as unscathed as possible.
Of course, there are countless more scenarios and situations than I've listed here, but this should be a good base to build upon from the ground up.