Countdown to Doom 1 Season 21 Episode

Episode #1

Bubble, Bubble, Oil and Trouble

Episode #2

Dr. Doom, Master of the World

Episode #3

Lizards, Lizards, Everywhere

Episode #4

Curiosity Killed the Spider-Man

Episode #5

The Sandman Is Coming

Episode #6

When Magneto Speaks.... People Listen

Episode #7

The Pied Piper of New York Town

Episode #8

The Doctor Prescribes Doom

Episode #9

Carnival of Crime

Episode #10

Revenge of the Green Goblin

Episode #11

Triangle of Evil

Episode #12

The A-B-C's of D-O-O-M

Episode #13

The Sidewinder Strikes!

Episode #14

The Hunter and the Hunted

Episode #15

The Incredible Shrinking Spider-Man

Episode #16

The Unfathomable Professor Gizmo

Episode #17

Canon of Doom

Episode #18

The Capture of Captain America

Episode #19

The Doom Report

Episode #20

The Web of Nephilia

Episode #21

Countdown to Doom

Episode #22

Arsenic and Aunt May

Episode #23

The Vulture Has Landed

Episode #24

Wrath of the Sub-Mariner

Episode #25

The Return of Kingpin

Episode #26

Under the Wizard's Spell