Space Sheriff Gavan is the first of the Metal Hero Series. It aired on TV Asahi from March 5, 1982 through February 25, 1983. For distribution purposes, Toei refers to this television series as Space Cop Gabin.
Space Sheriff Gavan (Season 1)

The Strange Fortress Beneath Tokyo (Episode 1)
Writer: Shozo Uehara
Air date: 1982-03-05
Runtime: 25 min

The Stolen Japanese Islands (Episode 2)
Writer: Shozo Uehara
Air date: 1982-03-12
Runtime: 25 min

It's Major! Stop Dr. Kuroboshi's BEM Project (Episode 3)
Writer: Shozo Uehara
Air date: 1982-03-19
Runtime: 25 min

The Majin Helmet That Calls Big Time (Episode 4)
Writer: Shozo Uehara
Air date: 1982-03-26
Runtime: 25 min

Mimi Cries; The Deadly Poison Cobra Bullet Hits Retsu (Episode 5)
Writer: Shozo Uehara
Air date: 1982-04-09
Runtime: 25 min

The Geniuses of the Makuu School (Episode 6)
Writer: Shozo Uehara
Air date: 1982-04-16
Runtime: 25 min

A Monster Hides, a Girl Kissed a Petal (Episode 7)
Writer: Shozo Uehara
Air date: 1982-04-30
Runtime: 25 min

Justice or Devil? The Silver-Masked Great Hero (Episode 8)
Writer: Shozo Uehara
Air date: 1982-05-07
Runtime: 25 min

The Beautiful Puppet Spy (Episode 9)
Writer: Shozo Uehara
Air date: 1982-05-14
Runtime: 25 min

Destroy the Human Crusher Corps! (Episode 10)
Writer: Shozo Uehara
Air date: 1982-05-28
Runtime: 25 min

Is Father Alive? The Mysterious SOS Signal (Episode 11)
Writer: Shozo Uehara
Air date: 1982-06-04
Runtime: 25 min

Hurry to the Park! UFO Boys in a Pinch (Episode 12)
Writer: Shozo Uehara
Air date: 1982-06-11
Runtime: 25 min

Retsu in Danger! The Great Reversal (Episode 13)
Writer: Shozo Uehara
Air date: 1982-06-18
Runtime: 25 min

A Parting of Love and Sadness: The Final Attack (Episode 14)
Writer: Shozo Uehara
Air date: 1982-06-25
Runtime: 25 min

Phantom? The Demonspace City (Episode 15)
Writer: Shozo Uehara
Air date: 1982-07-02
Runtime: 25 min

My First Love is the Shining of a Jewel: Farewell Galactic Express (Episode 16)
Writer: Shozo Uehara
Air date: 1982-07-09
Runtime: 25 min

The Running Time Bomb: Assassin on a Patrol Bike (Episode 17)
Writer: Susumu Takaku
Air date: 1982-07-16
Runtime: 25 min

The Princess Contest: Mess at Dragon Castle (Episode 18)
Writer: Shozo Uehara
Air date: 1982-07-23
Runtime: 25 min

Steamwear at 6 AM! Z Beam Charge Complete (Episode 19)
Writer: Shozo Uehara
Air date: 1982-07-30
Runtime: 25 min

The Mysterious Emergency Hospital! Mankind's Annihilation Approaches (Episode 20)
Writer: Mikio Matsushita
Air date: 1982-08-06
Runtime: 25 min

The Dancing, Prickly Great Pinch: Operation Honey! (Episode 21)
Writer: Shozo Uehara
Air date: 1982-08-20
Runtime: 25 min

Gold Mask and Younger Sister: The Yacht Going to the Sun (Episode 22)
Writer: Shozo Uehara
Air date: 1982-09-03
Runtime: 25 min

The Beauty's Cries That Cut through the Night! Ghost Carriage in the Fog (Episode 23)
Writer: Shozo Uehara
Air date: 1982-09-10
Runtime: 25 min

Mimi's Nightmare!? The Howling Cut-up Demonbeast (Episode 24)
Writer: Shozo Uehara
Air date: 1982-09-17
Runtime: 25 min

The Strangely Flickering Flowers in the Water: Young Leaves in Danger (Episode 25)
Writer: Kazue Abe
Air date: 1982-10-01
Runtime: 25 min

I Saw the Dolls! True Identity of the Poison Gas Killer Corps (Episode 26)
Writer: Shozo Uehara
Air date: 1982-10-08
Runtime: 25 min

The Teachers Are Weird! School's Full of Weirdness (Episode 27)
Writer: Shozo Uehara
Air date: 1982-10-15
Runtime: 25 min

Monica, the Witch Who Wanders the Dark Sea of Space (Episode 28)
Writer: Susumu Takaku
Air date: 1982-10-22
Runtime: 25 min

Blitzkrieg Magic Battle! Program of Darkness (Episode 29)
Writer: Shozo Uehara
Air date: 1982-10-29
Runtime: 25 min

Don Horror's Son Returns to Demonspace Castle (Episode 30)
Writer: Shozo Uehara
Air date: 1982-11-05
Runtime: 25 min

The Princess Who Became a Doll Listening to the Angel's Song (Episode 31)
Writer: Shozo Uehara
Air date: 1982-11-12
Runtime: 25 min

The Mysterious Underground Maze Target Is WX1 (Episode 32)
Writer: Shozo Uehara
Air date: 1982-11-19
Runtime: 25 min

A New Monster Is Born: The Boy Who Picked up an Alien (Episode 33)
Writer: Shozo Uehara
Air date: 1982-11-26
Runtime: 25 min

A Memory of Star Tears: The Child without a Father or Mother (Episode 34)
Writer: Shozo Uehara
Air date: 1982-12-03
Runtime: 25 min

The Young Lion of Makuu: Sandolva's Opposition (Episode 35)
Writer: Shozo Uehara
Air date: 1982-12-10
Runtime: 25 min

Roadshow of Malice: The Filming Location Is Demonspace (Episode 36)
Writer: Shozo Uehara
Air date: 1982-12-17
Runtime: 25 min

The Funny Tomboy Princess' Earth Adventure Trip (Episode 37)
Writer: Tomomi Tsutsui
Air date: 1982-12-24
Runtime: 25 min

The Surrounded Transport Corps: Sun Sword of Justice (Episode 38)
Writer: Shozo Uehara
Air date: 1983-01-14
Runtime: 25 min

When I Returned from School, My House Was a Makuu Base (Episode 39)
Writer: Shozo Uehara
Air date: 1983-01-21
Runtime: 25 min

Makuu's Great Decisive Battle at the Valley: I'm a Space Sheriff Too (Episode 40)
Writer: Tomomi Tsutsui
Air date: 1983-01-28
Runtime: 25 min

The New Demonspace City: The Red Hourglass of Life (Episode 41)
Writer: Yoshiaki Kobayashi
Air date: 1983-02-04
Runtime: 25 min

Retsu! Hurry! Father! (Episode 42)
Writer: Shozo Uehara
Air date: 1983-02-11
Runtime: 25 min

Reunion (Episode 43)
Writer: Shozo Uehara
Air date: 1983-02-18
Runtime: 25 min

The Head of Don Horror (Episode 44)
Writer: Shozo Uehara
Air date: 1983-02-25
Runtime: 25 min

Seasons

Episodes 44
Episodes 2