Initially inspired by Penny Arcade's Automata, but mixed with some ideas of my own.

In this world, humanoid robots are now commonplace but they are seen as unsettling to the majority of the human populace, who call them 'Tin Heads'. The main character, Atom, is a private detective taking on various cases and attempting to solve them. During the course of his adventures he'll face prejudice from humans while also navigating infighting amongst Tin Heads, including the radical factions who seek to overtake humanity and instill their own society. 

Maybe will expand on this idea someday. :)