1. Survival: Part 1
Aired: Sep 15, 2001#101 - Survival Pt. 1: Glen Canyon is once again ground zero for an outbreak ...
2. Survival: Part 2
Aired: Sep 22, 2001#102 - Survival Pt. 2: The Genus doesn't give up.
3. Survival: Part 3
Aired: Sep 29, 2001#103 - Survival Pt. 3: The Genus has gone underground ... deep underground in...
4. Don't Drink the Water
Aired: Oct 6, 2001#104 - Don't Drink the Water: While saving Glen Canyon from a giant Genus amo...
5. Slick
Aired: Oct 13, 2001#105 - Slick: When an oil tanker laden with Genus infested petroleum runs agr...
6. Swarm
Aired: Oct 20, 2001#106 - Swarm!: When a swarm of Genus wasps overruns a rural farm, Ira and the...
7. Fire and Ice
Aired: Oct 27, 20018. Meltdown
Aired: Nov 2, 2001#108 - Meltdown: The Genus has a new plan.
9. Junkyard Dogs
Aired: Nov 9, 2001#107 - Fire and Ice: An outbreak in the French Alps leads to the discovery of...
10. French Underground
Aired: Nov 16, 2001#110 - French Underground: General Woodman is involved in an accident that al...
11. Runaway Strain
Aired: Nov 30, 2001#111 - Runaway Strain: In an effort to create an anti-Genus germ, General Woo...
12. Dead Wayne Cells
Aired: Dec 7, 2001#112 - Dead Wayne Cells: After battling a horde of rapidly-replicating Genus ...
13. Roman Holiday
Aired: Feb 8, 2002#113 - Roman Holiday: When Ira and the gang track the Genus to Rome, they mus...
14. To Carthage Then I Came
Aired: Feb 15, 2002#114 - To Carthage Then I Came: A Genus outbreak in the deserts of Tunisia ha...
15. Year of the Genus
Aired: Feb 22, 2002#115 - Year of the Genus: When the Genus travels to Hong Kong in a crate of i...
16. Hot Java
Aired: Mar 1, 2002#116 - Hot Java: The Genus has grown in an active volcano on the island of Ja...
17. Ira Knows Best
Aired: Mar 8, 2002#117 - Ira Knows Best: After devolving a major outbreak in Philadelphia, the ...
18. Itching for the Genus
Aired: Mar 15, 2002#118 - Itching for the Genus: When the Genus doesn't show up, it looks like o...
19. Genus in Your Tank
Aired: Mar 22, 2002#119 - A Genus in Your Tank: When Genus infested gas makes its way into the c...
20. Cradle Will Fall
Aired: Mar 29, 2002#120 - Cradle Will Fall: When Wayne passes the test and finally becomes a Fir...
21. Head Case
Aired: May 4, 2002#121 - Head Case: Ira and the Alienators head off to merry ol' England to inv...
22. End Game
Aired: May 11, 2002#122 - End Game: When, in his last, devolving moment, Scopes unleashes a clou...
23. General Disorder
Aired: May 18, 2002#123 - General Disorder: When General Woodman receives an infected bite from ...
24. REAPER 1: Countdown
Aired: Nov 29, -1#124 - REAPER I: Countdown: General Woodman discovers a plot by General Grang...
25. Reaper: The Ark
Aired: Nov 29, -1#124 - REAPER I: Countdown: General Woodman discovers a plot by General Grang...
26. Reaper 3: Alpha Omega
Aired: Nov 29, -1#126 - REAPER III: Alpha Omega: This is it.