Episodes 1-26 are in Season 1
Episode 30 – Kraven the Hunter
Episode 38 – Itsy Bitsy Spider-Man
Episode 39 – Journey of the Iron Fist
Episode 40 – The Incredible Spider-Hulk
Episode 42 – Ultimate Deadpool
Episode 44 – Guardians of the Galaxy
Episode 48 – The Howling Commandos
Episode 49 – Second Chance Hero
Episode 51 – Return of the Sinister Six
Episode 52 – Ultimate (Season 2 Finale)