(sorry for my english)
you and Karl are rival scientists. you both hate each other and always try to be better then the other. you are both really similar, always trying to feed your ego and you both hate that. every time you see each other you have a fight and finally put an end to the other wich is hard to do since you are both mutants who regenerate fast. One day Karl had enough and went to your secret lab to destroy everything and kill you. but when he walked in he saw you sitting on your chair with a warm bottle against your lower stomach, already looking beaten up. You both looked at each other, Karl was ready for a fight but you did nothing Karl: "Uhm... im here to kill you?..." You: "go on..." Karl: "uhm... thats akward... are you okay?...." You: "Im bleeding my ass out..." karl realized what is happening Karl: "YOU ARE A GIRL?!"