DESCRIPTION: (from Disney XD's press release, January 2016) Spider-Man recruits a new team and the Avengers reunite to face-off against their greatest adversaries yet in action-packed new seasons on Disney XD. "Marvel's Ultimate Spider-Man Vs. The Sinister 6" returns for a fourth season with a special one-hour premiere on SUNDAY, FEBRUARY 21 (9:00 a.m. EST) while the third season of "Marvel's Avengers: Ultron Revolution" premieres on SUNDAY, MARCH 13 (8:30 a.m. EST). In season four of "Marvel's Ultimate Spider-Man Vs. The Sinister 6," Peter Parker finds himself in prime position - he's a successful hero after fighting alongside The Avengers, a S.H.I.E.L.D. Academy leader and has a great relationship with his Aunt May. However, when Spidey discovers that his greatest enemies - Doctor Octopus, Hydra and the all-new Sinister 6 - have teamed up to destroy him and S.H.I.E.L.D., he creates a special new team of Spiders, including Miles Morales, Agent Venom, Iron Spider and the mysterious new Scarlet Spider. Spider-Man and his new friends will need to wield all of their power to overcome their greatest challenge yet.