Conversation so far:
who is the villain in the incredibles 2
The villain of Incredibles 2 is Evelyn Deavor, a technological genius who hypnotizes a pizza delivery man to pose as the Screenslaver
who voices evelyn deavor in incredibles 2
Catherine Keener voices Evelyn Deavor in Incredibles 2
since when does evelyn deavor hate superheroes
Evelyn Deavor explains that she has hated superheroes since Gazerbeam and Fironic failed to save her father when he was murdered by burglars.
what is evelyn deavor's plan at her brother's summit
Evelyn Deavor plans to sabotage her brother's summit and cause a catastrophe that will tarnish the reputation of superheroes, ensuring they remain outlawed forever.

Question: who is the character's brother
Self-contained rewrite: who is evelyn deavor's brother