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A volcanic eruption releases the ROCK GIANT, a huge lava monster. MUMM-RA suborns this GIANT to destroy the THUNDERCATS. The storm, which accompanies the eruption, strands the THUNDERKITTENS in a forest. LION-0 and PANTHRO set out in the ThunderTank to rescue them but, before LION-0 and PANTHRO can reach them, JACKALMAN attacks the THUNDERKITTENS in a SkyCutter. The THUNDERKITTENS conjure up a Flying Saucer from their magic pellets, cause JACKALMAN to crash and seize the SkyCutter. When LION-0 and PANTHRO see the SkyCutter, they assume it is hostile, and almost shoot the THUNDERKITTENS out of the sky. No sooner are the THUNDERCATS safely in the ThunderTank and en route for the Cats' Lair, than the ROCK GIANT attacks pursuing the ThunderTank all the way to the Lair's doorstep. LION-0, PANTHRO and the THUNDERKITTENS manage to escape from the Tank before it is wrecked. The ROCK GIANT proves impervious to the THUNDERCATS' weaponry and LION-0 eventually faces it alone. JAGA appears and urges LION-0 to recall how the ancients used the power of extreme heat and cold to split and shape even the hardest rocks. LION-0 uses the Sword of Omens to bring the ROCK GIANT to white heat, and then lures him into the icy waters of the Lair's moat. The sudden change in temperature shatters the ROCK GIANT.


This episode teaches us respect for the forces of nature and how learning about nature and the basic laws of physics can be useful. The ThunderCats are forced to deal with electrical storms with thunder and lightning, volcanic eruptions, magnetic fields, and earthquakes, which are unleashed by the Rock Giant. In the beginning of the episode, Wilykit and Wilykat learn from Lion-O the practical benefit of not standing under trees in a thunderstorm. Later, Lion-O uses the basic laws of expansion and contraction brought about by the heat and cold of fire and water to destroy the Rock Giant.

The knowledge that we learn in our education serves a practical purpose in helping us live our lives. We should strive to learn all we can about natural science so that we can use the forces of nature to our advantage and be safe from their dangers.


"Thunder! Lightning! Storm! And fire! Something evil stirs deep in Third Earth!"

"Your puny technology is no match for the forces of nature, ThunderCats! Your time has come!"

"The ancients had no technology, Lion-O, no laser guns, no explosives, yet they created massive stone structures. All they had was fire and water, Lion-O. Fire and water...heat and cold..."

"You look like something in..."


It could be stated that "The Rock Giant" is a ThunderCats episode with a paper-thin plot - essentially, a raging storm awakens a sleeping rock giant who Mumm-Ra launches against the ThunderCats, who the feline heroes struggle to defeat but ultimately prevail against. And yet, somehow, this episode sparkles with so much of the magic that permeates the entire series that, even though this episode probably is weaker than much of season 1, it still provides for an entertaining and captivating ride. 

From the first few moments of this episode it grabs the audience's attention, with great, booming and eloquent dialogue from Mumm-Ra, with his transformation sequence appearing early on, and with the devil priest at his malevolent best, oozing evil and might as he calls on the power of the Rock Giant to attack the ThunderCats. Often the quality of an episode of ThunderCats can be measured by how good an outing that instalment is for Mumm-Ra, but in the case of this episode it is perhaps slightly misleading - for, in the context of its slightly weaker plot, Mumm-Ra here is a comprehensive show-stealer, displaying not just menace and power but also, in many ways, showcasing an aspect of the character that at times was forgotten throughout the series, that of a powerful sorcerer not always attacking directly but manipulating and setting events in motion from afar. 

The character of the Rock Giant itself is a fairly straightforward one. Whereas in many tales such as this one it would not be unusual to create a slightly tortured character from the giant that all the good guys fear, a character who acts out of fear or self-defence rather than evil, in "The Rock Giant" the audience is left in no doubt as to the fact that the Rock Giant is an evil creature, hell-bent on destroying the ThunderCats for no particular reason other than that they are Mumm-Ra's enemies. Whilst this makes the character somewhat one-dimensional, it could be argued that this is necessary in order to lessen the otherwise potentially traumatic conclusion of this episode, whereby the Rock Giant is destroyed by Lion-O. In fact, in and of itself, the manner in which the Rock Giant is defeated brings up its own debate - was the Rock Giant ever truly "alive" or was it merely rock animated by mystical forces? If, in fact, the Rock Giant was "alive", then by his actions does Lion-O in fact kill the creature? Although death is rarely tackled head-on in ThunderCats it is actually addressed more times than one might think, with several nameless and forgettable evil creatures (and even a couple that are not so nameless or forgettable) running, falling or generally meeting their doom off-camera. In this episode, the destruction of the Rock Giant is actually quite graphic, but the ambiguity is whether or not the creature was ever truly alive, something that, from the events of this episode, could never really be answered conclusively. 

Earlier I mentioned that this episode has quite a thin plot, and I reiterate that point now - there is nothing complex or especially interesting about this episode, it is primarily a straightforward action episode with very few (if any) major plot twists. However, it is worth remembering that exciting action sequences are one of the hallmarks of ThunderCats, and the show's ability to execute such sequences better than most of its peers are what many fans remember most fondly about the series. This is no less true of this episode, which expertly choreographs one engaging action scene after another, utilising the looming Rock Giant threatening to crush all in its path and crafting sequence upon sequence on this simple premise in a gloriously cinematic fashion. That this works as well as it does is a tribute not just to the individual animators, directors, etc., who worked on those sequences, but also how well the production team were able to synchronise the visuals on screen with Bernard Hoffer's exciting music track. The music on ThunderCats was another major element of the series' success and this episode makes good use of it. 

Another great masterstroke by writer Peter Lawrence was setting this episode in the middle of a torrential and violent storm.  Having the ThunderCats battle the weather as well as the Rock Giant not only adds another dramatic element, but also creates a somewhat threatening and ominous backdrop that really adds a whole new dimension to the Rock Giant character, giving the impression that he truly is a creature spawned from the furious elements - an impression reinforced by his fire-breathing abilities! 

Could this episode have been improved upon? Probably. Adding some other plot twist at just the right moment would have further complemented the outstanding action sequences and brought a whole new dimension to this episode. However, this episode nonetheless bears many exciting ThunderCat trademarks and is likely to entertain anyone who enjoys a good dose of action with their animation!

Written by Chris (He-Fan)


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* The ThunderCats (or specifically, Lion-O and Snarf) first encountered a giant rock creature when searching for the Time Capsule in the episode of the same name - however, the creature they encountered in that episode had no mouth, could not breathe fire and appeared to be rooted to the spot, in complete contrast to the Rock Giant in this episode!

* When ThunderCats began airing on the BBC in the UK the show was broadcast once a week, and as such the "first season" of ThunderCats in the UK comprised only half of the show's season 1. This episode was used as the show's first "season finale" in October 1987, and would be the last "new" episode of ThunderCats to be broadcast in the UK until September 1990, when the BBC began airing the second half of season 1!


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