Watch ThunderCats Online (1985)

Where to watch “ThunderCats” (1985) online legally? See US streaming options first, plus English-region fallbacks.

ThunderCats first aired in 1985 • originally associated with Syndication • 4 seasons • 130 episodes • around 22 minutes per episode • status: Ended.

If you searched for “watch ThunderCats online” (1985), the safest approach is to verify legal availability in your region (US first, then English-region fallbacks).

It sits in the Animation, Sci-Fi & Fantasy, Action & Adventure space, which helps set expectations for tone and pacing.

It’s generally well-rated by viewers, so it’s a strong pick if you want something reliable to start tonight.

This page includes season navigation, episode list, cast, trailer (when available), and legal provider hints to help you decide quickly.

Synopsis

The inhabitants of the planet Thundera evacuate just before it is destroyed. They were pursued by a band of mutants. All but one of their escape ships was destroyed. Only a small group of Thunderians (Thundercats) remained. With only half engine power, the group, which was led by Jaga, had to set a course for the nearest planet. Jaga commanded their ship while the other seven were in their stasis tubes. Jaga died on their journey to Third Earth and their ship crashed there. Soon they made friends with various groups in the area and they designed a fortress. Mumm-Ra the centuries-old embodiment of evil, along with the mutants that destroyed the rest of the Thunderians are a constant threat. But Lion-O, the new leader of the Thundercats, with his weapon the "Sword of Omens" will help the Thundercats to have a standing chance.

Keywords

cat, sword, pyramid, magic, mummy, future, high technology, post-apocalyptic future, clairvoyance, space, super speed, anthropomorphism, mutants, spaceship, good versus evil.

Stills

Similar series

Thundarr the Barbarian, ThunderCats, Adventure Time: Fionna and Cake, Kipo and the Age of Wonderbeasts, Masters of the Universe: Revolution, Kid vs. Kat, He-Man and the Masters of the Universe, The Adventures of Jimmy Neutron: Boy Genius.

Main cast

Larry Kenney

as Lion-O / Jackalman (voice)

Peter Newman

as Tygra / WilyKat / Monkian (voice)

Earle Hyman

as Panthro (voice)

Lynne Lipton

as Cheetara / WilyKit (voice)

Earl Hammond

as Mumm-Ra / Jaga / Vultureman (voice)

Bob McFadden

as Snarf / Slithe (voice)

Gerrianne Raphael

as Pumyra (voice)

Doug Preis

as Alluro (voice)

Official trailer

There’s no trailer available for this series right now.