As stated earlier the MC is either a guy, a girl or a futa. Futa's can be born futa or have operations to turn futa but said operations are extremely expensive. The MC can have one exceptional talent be it something like athleticism, creative talent, or something similar. Otherwise they are an average person who happened to survive a freak accident which gives them their power. The only thing that all MC must have is a love for size for them the bigger the better, what they like to have bigger as better is up to you as each MC should be their own unique character. Other MC's can be put in as Cameo's but they will not have their powers. Apart from that and the rules stated earlier you have free reign, also how they get their power is totally up to you, as for what the accident that caused it that's also up to you. Let's make some interesting characters and story.