No Good Deed

X-Men: Evolution - S4 E2

No Mutant Is an Island

X-Men - S5 E4

No One Escapes the Mandarin

The Marvel Super Heroes - S1 E51

Not a Toy

Marvel's Ultimate Spider-Man - S1 E23

Not All My Power Can Save Me!

The Marvel Super Heroes - S1 E43

Not Far from the Tree

Iron Man - S2 E4

Nova Me, Nova You

Marvel's Guardians of the Galaxy - S2 E16

Now Comes the Sub-Mariner

Fantastic Four - S1 E3

O, Were Blood Thicker Than Robot Juice!

Marvel's M.O.D.O.K. - S1 E8

Obsession

X-Men - S3 E10

Of Ice and Men

The Marvel Super Heroes - S1 E6

Of Moles and Men

Marvel's Hulk and the Agents of S.M.A.S.H. - S1 E9

Oh, Brother!

The Super Hero Squad Show - S1 E7

Old Soldiers

X-Men - S5 E11

Old Wounds, Fresh Blood

Blade - S1 E8

The Olympics of Space

The Fantastic Four - S1 E4

Omega Red

Wolverine - S1 E4

On Angel's Wings

X-Men: Evolution - S2 E9

The Once and Future Kang

Marvel's Avengers Assemble - S4 E9

One in a Million You

Marvel's Guardians of the Galaxy - S1 E3

One is the Loneliest Number

Spider-Man Unlimited - S1 E11

One Little Thing

Marvel's Avengers Assemble - S1 E23

One Man's Worth (1)

X-Men - S4 E1

One Man's Worth (2)

X-Men - S4 E2

The One-Eyed Idol

Spider-Man - S1 E15

Opening Night

The Spectacular Spider-Man - S2 E12

Operation Barrier Breakthrough

Marvel's Future Avengers - S1 E24

Operation Galactic Storm

The Avengers: Earth's Mightiest Heroes - S2 E24

Operation Rescue Winter Soldier

Marvel's Future Avengers - S1 E16

Operation: Rebirth

X-Men: Evolution - S2 E14

Origin 1 / Origin 2 / Origin 3 / Origin 4 / Origin 5 / Origin 6

Marvel's Spider-Man - S0 E1

The Origin of Captain America / Wreckers Among Us / Enter Red Skull

The Marvel Super Heroes - S1 E1

The Origin of Iron Man (1)

Iron Man - S1 E11

The Origin of Iron Man (2)

Iron Man - S1 E12

The Origin of Spiderman

Spider-Man - S2 E1

The Origin of the Fantastic Four (1)

Fantastic Four - S1 E1

The Origin of the Fantastic Four (2)

Fantastic Four - S1 E2

Origin of the Hulk

The Marvel Super Heroes - S1 E7

Origin Of The Hulk

The Incredible Hulk - S1 E3

The Origin of the Iceman

Spider-Man and His Amazing Friends - S2 E1

The Origin of the Mandarin

Iron Man - S1 E7

The Origin of the Mandarin

The Marvel Super Heroes - S1 E21

The Origin of the Silver Surfer (1)

Silver Surfer - S1 E1

The Origin of the Silver Surfer (2)

Silver Surfer - S1 E2

The Origin of the Silver Surfer (3)

Silver Surfer - S1 E3

The Origin of the Spider-Friends

Spider-Man and His Amazing Friends - S3 E5

Origins: Drax: Part 1

Marvel's Guardians of the Galaxy - S0 E7

Origins: Drax: Part 2

Marvel's Guardians of the Galaxy - S0 E8

Origins: Gamora: Part 1

Marvel's Guardians of the Galaxy - S0 E9

Origins: Gamora: Part 2

Marvel's Guardians of the Galaxy - S0 E10

Origins: Groot: Part 1

Marvel's Guardians of the Galaxy - S0 E3

Origins: Groot: Part 2

Marvel's Guardians of the Galaxy - S0 E4

Origins: Rocket Raccoon: Part 1

Marvel's Guardians of the Galaxy - S0 E5

Origins: Rocket Raccoon: Part 2

Marvel's Guardians of the Galaxy - S0 E6

Origins: Star-Lord: Part 1

Marvel's Guardians of the Galaxy - S0 E1

Origins: Star-Lord: Part 2

Marvel's Guardians of the Galaxy - S0 E2

Orphan's End

X-Men - S3 E16

Osborn Academy

Marvel's Spider-Man - S1 E3

Out of the Past (1)

X-Men - S3 E1

Out of the Past (2)

X-Men - S3 E2

Out of Time

Marvel's Future Avengers - S1 E23

Out Of Time

Fantastic Four: World's Greatest Heroes - S1 E20

Outbreak

Iron Man - S1 E5

Overflow

Wolverine and the X-Men - S1 E4

The Overly Clever Helper Robot!

Marvel Disk Wars: The Avengers - S1 E37

The Panther and the Wolf

Marvel's Avengers Assemble - S5 E4

Panther's Quest

The Avengers: Earth's Mightiest Heroes - S1 E11

Panther's Rage

Marvel's Avengers Assemble - S3 E17

Paranoid

Marvel's Guardians of the Galaxy - S3 E20

Pardo Presents

Spider-Man - S2 E11

The Parent Trap

Marvel's Ultimate Spider-Man - S2 E19

The Parker Luck

Your Friendly Neighborhood Spider-Man - S1 E2

Part 1

LEGO Marvel Avengers: Strange Tails - S1 E1

Part 2

LEGO Marvel Avengers: Strange Tails - S1 E2

Partners in Danger: Guilty

Spider-Man - S4 E1

Partners in Danger: Partners

Spider-Man - S4 E5

Partners in Danger: The Awakening (1)

Spider-Man - S4 E6

Partners in Danger: The Black Cat (2)

Spider-Man - S4 E3

Partners in Danger: The Cat (1)

Spider-Man - S4 E2

Partners in Danger: The Haunting of Mary Jane Watson

Spider-Man - S4 E9

Partners in Danger: The Lizard King

Spider-Man - S4 E10

Partners in Danger: The Prowler

Spider-Man - S4 E11

Partners in Danger: The Return of Kraven

Spider-Man - S4 E4

Partners in Danger: The Return of the Green Goblin

Spider-Man - S4 E8

Partners in Danger: The Vampire Queen (2)

Spider-Man - S4 E7

The Party

Spider-Man: The New Animated Series - S1 E1

Party Animals

Marvel's Spider-Man - S1 E5

Past Discretions

Wolverine and the X-Men - S1 E11

Pawns of the Kingpin

Spider-Man and His Amazing Friends - S1 E12

Pedicure and Facial of Doom!

The Super Hero Squad Show - S2 E13

Peril in the Surface World

The Marvel Super Heroes - S1 E13

The Peril of Parafino

Spider-Man - S1 E13

Persona

The Spectacular Spider-Man - S1 E10

The Phalanx Covenant (1)

X-Men - S5 E1

The Phalanx Covenant (2)

X-Men - S5 E2

Phantom from the Depths of Time

Spider-Man - S2 E8

The Phantom of Film City

The Fantastic Four - S1 E2