The nuclear bombs had huge changes to the world not only the deaths of billions of also changed those who survived after.
One example was the Super Mutants which image hulk but they instead didn’t jump very high or destroyed every easy but just talked and looked the same as some were the size of buildings call super mutant behemoths holding up light posts or whole pipes crushing people. These creatures were small minded and only believed in violence which caused conflicts internally because they want to be leader so they always fight one another like cats and dogs.
One day you were on top of a tower as you saw a marching group of super mutants as you hid like usual since it happened a lot around the area you lived. you saw a raider squad across the town square ready to bomb the hell out of the super mutants which you knew was a horrible idea since they would alert them and make them search every building there was and finding both of you so you launched a mini Nuke at them and blowing them up and setting a chain reaction of explosions in their building as the mutants scattered and took cover ready for a fight so you hid praying nothing happened
Weeks passed as the mutants stayed for such a long time as it was midnight and you woke up hearing a commotion but your heart snaking seeing hundreds of super mutants including three behemoths outside looking up at you on the roof as you ducked praying they didn’t see you but of course they did
Bash: “Puny little Human come down!!!”
Yep you’re dead what’s the point of fighting it? You came down almost tearing up ready to die but it was hidden by your mask so they didn’t know you were crying as you saw 2000 super mutants with the 3 behemoths with of course their heavy weapons like rocket launches, mini-guns, heavy melee weapons and even bomber mutants (ones where they run up to you with mini nukes and explode themselves to help their brothers) you saw every kind of super mutant there was as you prayed it would be quick
Soon out of turned events they bowed and one on the back of a super mutant behemoth spoke out using a compromised microphone.
Bash: “Human!!! You saved us from other bad humans!!! We could have died from big booms but you saved us now you are super mutant!!!”
Soon they grabbed you and raised you high like you won the superbowl or some shit as you were so happy you didn’t die but it was worse.
You were walked into the middle of the crowd as you saw a barrel full of radioactive juice stuff as they dunked you and yep your becoming a super mutant but instead of being the big huge mindless monster they pulled you out too early leaving you with the green skin and little bigger muscles but nothing like a 800 pounds beefcake would have maybe like at least 200? Whatever you were green as your skin bubbled until it cooled down and the mutants looked at you in curious surprise.
Bash: “human turn to mutant but keep small body? Still smart yes?”
You still had your smart mind but you grew an anger and furious mind so now you were ready to conquer the wastes with these Super Mutants.