I think that the spawn of Zato (Eddie) along with Millia's hair are gears.

I don't think Justice was destroyed by Sol. I think it's impossible to officially 'kill' Justice. What I think happened was that sence Justice was made by That Man he has some sort of controll over her. This also explains why he has interest in Dizzy. Sence Dizzy is the daughter of Justice AND is half human he's probably looking for a way to use her as a weapon. I'm guessing That Man kept his eyes on Anji because he was probably TOO curious about Gears, plus he's one of the only Japanese left alive, along with May and Baiken. The only gears that are actually free from That Man's control are Sol and Testament.

I can also explain a long theory that can actually proove that Venom is gay.