So here are the ideas I have so far for antagonists.  There aren't in any particular order.<br/><br/>A legacy of Chen Lu/Radioactive Man but have it be a Radioactive Woman instead.  Possibly a clone of the original that is female because it stabilized the cloning (like X-23).<br/><br/>The (Superior) Scarlet Spider.  The son or daughter (haven't decided) of Otto Octavius when he was in Peter Parker's body, they have inherited their own suite of spider based powers but rather than become a hero, they are a villain and a superhuman mercenary for hire.<br/><br/>Fenris.  Baron Arn Strucker does not talk about his parentage but rest assured that his blood is pure.  A mutant who possesses the power to fly as well as fire both concussive blasts and disintegration beams, he supplements himself with the best tech that his vast fortune can buy.  He continues to support the cause of fascism across the world, though especially in Europe and the Americas.