This was a special holiday-themed episode that aired in October 2016 as part of the "Ultimate" series' final season.
The following summary outlines the key plot points and themes for of Marvel’s Ultimate Spider-Man , titled " Strange Little Halloween ." Episode Overview [S4E20] Strange Little Halloween
Based on character rosters, this episode likely occurs before the events of Avengers: Ultron Revolution , as Ant-Man is still actively operating with the Avengers in New York. This was a special holiday-themed episode that aired
The episode highlights the dynamic between Doctor Strange’s magic and Ant-Man’s technology. [S4E20] Strange Little Halloween