1x124 - Double trouble

July 3, 1965

Higeoyaji's pet dog Pero has a diamond that it took back from space. Dr. Fooler puts Pero's memory into the computer of Captain Dog, the robot dog, to make it find diamonds. Astro follows the robot dog, which is heading for Mars.

1x125 - Find the Bacteria

July 10, 1965

1x126 - Roboids

July 17, 1965

1x127 - The Experimental Robot

July 24, 1965

1x128 - Treasures of the Inca Empire

July 31, 1965

1x129 - Atom vs. Atom

August 14, 1965

1x130 - The Storm on Mars

August 21, 1965

1x131 - The Moon Champion

August 28, 1965

1x132 - Prince Louis

September 4, 1965

1x133 - Revenge After Ten Years

September 11, 1965

1x134 - Operation Escape

September 18, 1965

1x135 - The Robot-Dog Backy

September 25, 1965

1x136 - Inspector Jaguar

October 2, 1965

1x137 - Little Cooley

October 9, 1965

1x138 - 1 Long Day

October 16, 1965

1x139 - Atom Stolen

October 23, 1965

1x140 - The King and Atom

October 30, 1965

1x141 - The Locomotive March

November 6, 1965

1x142 - Minya’s Star

November 13, 1965

Astro Boy and a group of passengers from a doomed rocketliner are stranded on an asteroid with strange characteristics and a mysterious monster.

1x143 - Bird Street Story

November 20, 1965

1x144 - Lost Friendship

November 27, 1965

1x145 - Atom in the Deep Sea

December 4, 1965

1x146 - Report from the Future

December 11, 1965

1x147 - Mid-air Screen

December 18, 1965

1x148 - Robio and Robiet

December 25, 1965

1x149 - The Can Capriccio

January 1, 1966

1x150 - Miss Magnet

January 8, 1966

1x151 - Lonely Atom

January 15, 1966

1x152 - The Robot Bombs

January 22, 1966

1x153 - The Red Merry-Go-Round

January 29, 1966

1x154 - Blue Bird Story

February 5, 1966

1x155 - The Crazed Boundary

February 12, 1966

1x156 - Robot Mayor

February 19, 1966

1x157 - Gypsy’s Star

February 26, 1966

1x158 - Funny Companion

March 5, 1966

1x159 - Devil and Angel

March 19, 1966

1x160 - The Golden Flute

March 28, 1966

1x161 - Dream-Selling Aliens

April 2, 1966

1x162 - Operation Candy

April 9, 1966

1x163 - Road to Another World

April 16, 1966

1x164 - The Space Spider

April 23, 1966

1x165 - A Great Fuss Over Babies

April 30, 1966

1x166 - The Jewel-Eating Monster

May 7, 1966

1x167 - Plenty of Balloons

May 14, 1966

1x168 - The Island That Jumped Up

May 21, 1966

1x169 - Gift from the Future

May 28, 1966

1x170 - Two Princesses

June 4, 1966

1x171 - Kutcher Forever

June 11, 1966

1x172 - The Herald Brothers

June 25, 1966

1x173 - Robotty

July 2, 1966

1x175 - Robot Wars (part one)

July 23, 1966

1x176 - Robot Wars (part two)

July 30, 1966

1x177 - The Gigantic Robot

August 6, 1966

1x178 - Chi-tan’s Nighttime Adventure

August 20, 1966

1x179 - Blue Horseman (part one)

August 27, 1966

1x180 - Blue Horseman (part two)

September 3, 1966

1x181 - Ghost Manufacturing Machine

September 10, 1966

1x182 - Demented Cobalt

September 24, 1966

1x183 - Japanese People from Space

October 1, 1966

1x184 - Time War

October 8, 1966

1x185 - Star of Africa

October 22, 1966

1x186 - Monsters Come out at Night

October 29, 1966

1x187 - Baily’s Legend

November 5, 1966

1x188 - Tengu of Kurama

November 19, 1966

1x189 - Confusion at the Shooting Studio

November 26, 1966

1x190 - Miracle of Mesopotamia

December 3, 1966

1x191 - Wandering Roppi

December 17, 1966

1x192 - Medusa’s Mansion

December 24, 1966

1x193 - The Greatest Adventure on Earth

December 31, 1966