my characters weakness (English storytelling assignment)

My character is flash from marvel, flash has a secret weakness which might Suprise a lot of people but if you watch the movies and listen carefully the whole movie you might catch what flash says. Now flash with super speed which is faster than superman and the fastest hero in the world (to humans). Flash’s weakness is the joker, from a villain arc in marvel going against bat man. Flash is weak compares to the joker; The joker can think faster than the flash and can make split second decisions worth lives taken. Also, a weakness is that joker would laugh at death even if he was about to die. So, flash doesn’t stand a chance. but thankfully superman and bat man were there to stop the joker if not the joker would take over the marvel world. A different character weakness from marvel being Thor because the symptoms of Thors powers and being with Odin and Loki being villains Odin gave Thor his powers. But with Thor powers come a disease being named “ornki kovki” standing for pain of a 1,000 years. meaning when Thor dies wherever he goes after death he has 1,000 years of pain in his heart. (I got these fun facts from novels, controversial talks, and movies)