Season 1
Shotaro had become an Interpol agent, working with Branch Robo, the antirobot crime unit of that organization. He still employs Tetsujin.
Episodes
1 The Plot to Steal the Sun Oct 3, 1980
2 Hands of the Enemy Oct 10, 1980
3 Deadly Doctor Doom Oct 17, 1980
4 The Robot Birdman Oct 24, 1980
5 The Phantom Robot Oct 31, 1980
6 Monster of the Deep Nov 7, 1980
7 The Crashing Satellite Nov 14, 1980
8 The Dreaded Double Robot Nov 21, 1980
9 Menace from Space Nov 28, 1980
10 Bitter Revenge Dec 5, 1980
11 The Invisible Enemy Dec 12, 1980
12 The Robot Runners Dec 19, 1980
13 Will the Real Gigantor Please Stand Up? Dec 26, 1980
14 The Abominable Iceman Jan 9, 1981
15 The Dragon Master Jan 16, 1980
16 The Guardian of Evil Jan 23, 1980
17 The Manta Marauders Jan 30, 1981
18 The Pirate Submarine Feb 6, 1981
19 Sting of the Scorpion Feb 13, 1981
20 The Fearsome Pharoah Feb 20, 1981
21 The Shrinking Ray Feb 27, 1981
22 Kid Warriors Mar 6, 1981
23 Red Devil Mar 13, 1981
24 The Fiery Robosaurus Mar 20, 1981
25 Invaders from Space Mar 27, 1981
26 The Master of Space Apr 3, 1981
27 The Great Garkonga Apr 10, 1981
28 The Pritheum Plot Apr 17, 1981
29 The Crusader Robot Apr 24, 1981
30 Scheme to Scorch the West May 1, 1981
31 The Doomsday Comet May 8, 1981
32 The Thunder God May 15, 1981
33 The Final Battle May 22, 1981
34 The Robot Who Could Think May 29, 1981
35 Blue Danger Jun 5, 1981
36 Robot on a Rampage Jun 12, 1981
37 The Awesome Alpha-Bot Jun 19, 1981
38 Fall from the Sky Jun 26, 1981
39 The Boy from Second Earth Jul 3, 1981
40 The Black Hole Jul 10, 1981
41 The Queen of Time Jul 17, 1981
42 The Curse of Dracula Jul 24, 1981
43 Z is for Zombie Jul 31, 1981
44 The Ghastly Ghost Aug 7, 1981
45 Skeemer's Demons Aug 14, 1981
46 Trapped in the Past Aug 21, 1981
47 Gigantor for Sale Aug 28, 1981
48 The Space Fortress Sep 4, 1981
49 The Friend Turned Enemy Sep 11, 1981
50 The Battle to Save the Earth Sep 18, 1981
51 The Sun That Never Shines Sep 25, 1981