1

The Plot to Steal the Sun

2

Hands of the Enemy

3

Deadly Doctor Doom

4

The Robot Birdman

5

The Phantom Robot

6

Monster of the Deep

7

The Crashing Satellite

8

The Dreaded Double Robot

9

Menace from Space

10

Bitter Revenge

11

The Invisible Enemy

12

The Robot Runners

13

Will the Real Gigantor Please Stand Up?

14

The Abominable Iceman

15

The Dragon Master

16

The Guardian of Evil

17

The Manta Marauders

18

The Pirate Submarine

19

The Sting of the Scorpion

20

The Fearsome Pharaoh

21

The Shrinking Ray

22

Kid Warriors

23

Red Devil

24

The Fiery Robosaurus

25

Invaders from Space

26

The Master of Space

27

The Great Garkonga

28

The Pritheum Plot

29

The Crusader Robot

30

The Scheme to Scorch the West

31

The Doomsday Comet

32

The Thunder God

33

The Final Battle

34

The Robot Who Could Think

35

Blue Danger

36

Robot on a Rampage

37

Fall from the Sky

38

The Awesome Alpha-Bot

39

The Boy from Second Earth

40

The Black Hole

41

The Queen of Time

42

The Curse of Dracula

43

Z is for Zombie

44

The Ghastly Ghost

45

Skeemer's Demons

46

Trapped in the Past

47

Gigantor for Sale

48

The Space Fortress

49

The Friend Turned Enemy

50

The Battle to Save the Earth

51

The Sun That Never Shines