Leo the Lion is a sequel to the Japanese-American co-produced series "Jungle Emperor", or Kimba the White Lion. Osamu Tezuka had always wanted his story of Kimba to follow Kimba's entire life, and the Jungle Emperor/Kimba series was such a hit in Japan that Dr. Tezuka produced a sequel, without his American partners, in 1966. Making the series without a co-producer gave him complete creative control. For example, Dr. Tezuka changed the conclusion of his original manga story to a happy ending. Leo the Lion does not follow immediately from the end of the Kimba series. Instead, the story begins a couple of years following the end of the previous series. To English-speaking audiences, the behavior of the title character is inexplicably out of line with what was established in the first series. At the end of the first series, in the original Japanese script, Kimba promises to keep his animals separate from humans. It is this promise that drives the seemingly hermit-like Leo in this series. As the series unfolds, the focus shifts from the title character to one of his cubs, the male named Rune. This series as a whole is about Rune's growth, from a whining weakling to a confident leader.
Leo the Lion (Season 1)
The First Adventure (Episode 1)
Air date: 1966-10-05
The Map of Danger (Episode 2)
Air date: 1966-10-12
The Blue Lion (Episode 3)
Air date: 1966-10-19
The Last Hunt of the Ahabi People (Episode 4)
Air date: 1966-10-26
Leo Becomes a Father (Episode 5)
Air date: 1966-11-02
The Mighty Gorilla (Episode 6)
Air date: 1966-11-09
The Golden Bow (Episode 7)
Air date: 1966-11-16
The Case of the Moonlight Stone (Episode 8)
Air date: 1966-11-23
The Falcons (Episode 9)
Air date: 1966-11-30
Rick the Lycon (Episode 10)
Air date: 1966-12-07
Panja's Hide (Episode 11)
Air date: 1966-12-14
The Poachers (Episode 12)
Air date: 1966-12-21
Duel at Lubar Valley (Episode 13)
Air date: 1966-12-28
The Saber-Toothed Tiger (Episode 14)
Air date: 1967-01-04
The Marked Giraffe (Episode 15)
Air date: 1967-01-11
Lily the Black Leopard (Episode 16)
Air date: 1967-01-18
Devil Falls (Episode 17)
Air date: 1967-01-25
The Steel Monster (Episode 18)
Air date: 1967-02-01
The House for the Animals (Episode 19)
Air date: 1967-02-08
The White Cliff (Episode 20)
Air date: 1967-02-15
Agura the Terrible (Episode 21)
Air date: 1967-02-22
Candle Rock (Episode 22)
Air date: 1967-03-01
The Silver Wolf (Episode 23)
Air date: 1967-03-08
Adventure at Volcano Island (Episode 24)
Air date: 1967-03-15
The Green Plague (Episode 25)
Air date: 1967-03-22
The Eternal Mount Moon (Episode 26)
Air date: 1967-03-29

Seasons
Episodes 26