1x1 - The Strongest Cat is Born!

October 2, 1999

Kuro wakes up in Dr. Go's lab after being kidnapped and repaired to become a cyborg. However, Kuro manages to break his control chip, and he sets off to return to his owners' home.

1x2 - Nyan-Nyan Army

October 9, 1999

Kuro and his owners are invited to a contest at a local store. Kuro, however, realizes this as a ruse set up by Dr. Go and his army of robot cats.

1x3 - Hell Highway

October 16, 1999

Dr. Go creates a chip that allows Mi to penetrate metal objects and transform them at will. Mi goes out of control with this and eventually becomes a mechanically engineered automobile, which Kuro cannot defeat alone.

1x4 - Appearance of the Flying Robot Family!

October 23, 1999

Dr. Go constructs two robots: Big Sam and Little Sam. He accidentally sets off a self-destruct bomb and is trapped inside. Kuro and Mi work together to try to deactivate the bomb and save the doctor, who, by that time, has already escaped.

1x5 - M's First Love

October 30, 1999

Mi falls in love with one of the dogs in the neighborhood, but he does not have the courage to speak to her, and he disguises himself as a dog to try to do so. Meanwhile, another of Dr. Go's inventions causes chaos, and endangers the dog.

1x6 - The Case of M's Abduction

November 6, 1999

1x7 - Episode 7

November 13, 1999

1x9 - The Legend Behind the School

November 27, 1999

1x10 - One Tree Hill at the Back of the First Underground People

December 4, 1999

1x11 - Enter - Boy Genius Kotaro

December 11, 1999

1x12 - Oh, Evil Devil M

December 18, 1999

1x13 - Battle Within the Cage

December 25, 1999

1x14 - Go and Kotaro's Big Experiment

January 1, 2000

1x15 - Calling on Matatabi!

January 8, 2000

1x16 - Runaway Kuro

January 15, 2000

1x17 - The Great Duel in the Snow!

January 22, 2000

1x18 - Beautiful Firefighter! Megumi

January 29, 2000

1x19 - Explosive! Battle-Borg

February 5, 2000

1x20 - Kuro becomes a father!?

February 12, 2000

1x21 - Hachamecha - Great Struggle Match

February 19, 2000

1x22 - Suzuki's First Date

February 26, 2000

1x23 - Oh, Evil Hebibinger

March 4, 2000

1x24 - Rescue Kotaro!

March 11, 2000

1x25 - Kotaro's Father Changes

March 18, 2000

1x26 - The World's Conquest is to Commence?!

March 25, 2000

1x27 - The Srange World Experience is to Begin

April 1, 2000

1x28 - Desert Town Risen

April 8, 2000

1x29 - The New World Collapses

April 15, 2000

1x30 - The End of the New World

April 22, 2000

1x31 - Mi's Secret Birth

April 29, 2000

1x32 - Honeymoon War?!

May 6, 2000

1x33 - School Ghost Extermination

May 13, 2000

1x34 - Large Lottery Battle Race

May 20, 2000

1x35 - Matatabi's Great Training?!

May 27, 2000

1x36 - Protect the Little Cats!

June 3, 2000

1x37 - The Non-Stop Bus Trip

June 10, 2000

1x38 - Battle Against a White Monster

June 17, 2000

1x39 - Mi #2 Appears!

June 24, 2000

1x40 - Nana Tries Her Best!

July 1, 2000

1x41 - Revival! the Devil Returns

July 8, 2000

1x42 - Battle! Kuro vs Devil

July 15, 2000

1x43 - Kuro Moves House

July 22, 2000

1x44 - Where is Kotaro?

July 29, 2000

1x45 - Fear of the Great Virus!!

August 5, 2000

1x46 - Encounter With Matatabi

August 12, 2000

1x47 - Fight With the Crows!!

August 19, 2000

1x48 - Kid's Final Fight!!

August 26, 2000

1x49 - Meow Meow Land

September 2, 2000

1x50 - True Wild Kuro-chan!

September 9, 2000

1x51 - Kuro and Mi Game Showdown

September 16, 2000

1x52 - A Transfer Student with Psychic Abilities?!

September 23, 2000

1x53 - A Message From Space

September 30, 2000

1x54 - The YaYaYa Aliens Attack

October 7, 2000

1x55 - Doomsday is Coming!

October 14, 2000

1x56 - The Baby of terror is born!

October 21, 2000

1x57 - Fight Between Kuro and Nana

October 28, 2000

1x58 - The YaYaYa Return

November 4, 2000