For 1 Year!
You have complete control over all the stories and events of one of your most hated characters. You can use this year to just completely destroy the character, make their lives hell, show the world how shallow and meaningless they really are or go the other route. Take the year to redesign the character or just rebuild them form the ground up. Maybe even keep them the same but do something thats never been thought of before or at least no ones been willing to try.
And as icing on the cake anything that happens within your year of control can't be retconned for atleast 5 years following your year's end!
You only get one character to choose.
What would you do and who would you do it to?