In the comics, who created the Vision?

Ultron

Who is Lady Tremaine’s pet cat in "Cinderella"? In the song 'Frosty the Snowman', what made Frosty come to life? Which bird lays the largest eggs relative to its body size? Who holds the record for the most rushing yards in NFL history? In Christian church services, what term describes the lighting gradually increasing during a special Easter ceremony?