Star Trek III: The Search for Spock featured Christopher Lloyd as a Klingon named Kruge.
Star Trek III: The Wrath of Khan was a change for the franchise, existing mainly as a way to unwrite the death of Spock in Star Trek II: The Wrath of Khan. Leonard Nimoy originally wanted to be done with the franchise after the second film but enjoyed the experience so much that he requested to come back for the third film.
When it came time to do the third film, the script had to find a way to bring back Spock, and the way the writing staff came up with was to bring him back through Project Genesis. Genesis was a device that could create a new platform that could sustain life. The crew of the Enterprise shot Spock’s body onto the planet as a final send-off at the end of the second film, and in doing so restored Spock’s body.
There’s more to the plot but the basic gist is that the Klingons found out about the device and its restorative power and they grew concerned about its use as a weapon. A well-founded fear considering the fact it destroyed Khan Noonien Singh and his followers upon its destination,
Fearing its power, Christopher Lloyd’s character, Kruge, attempts to capture information on the device in order to protect the Klingon Empire from the device he believes is truly a Federation weapon.
Was Kruge right to be worried during the events of Star Trek III: The Search for Spock?
Kruge was right to fear the power of Genesis, as everyone in Star Trek truly feared it. Its entire existence was the catalyst for a lot of what would happen in Trek II and III. Yet, when we speak about his right to be worried, we have to also ask if he was right in how he reacted?
It’s normal and understandable to fear a new weapon, but Kruge killed his lover, one of his best officers, and then had given the order that lead to the death of David Marcus (James Kirk’s son). So his behavior was probably not something you could argue was conducive to his fear.
So yes, Kruge was right to fear the device but he wasn’t right about why. One article from GameRant claimed that because Kruge was rightfully fearful of the device, that he was “right all along”.
Yet, he wasn’t. As David Marcus even remarked, Genesis was a failure. Kruge was worried over the potential of such a device, but not the actual implementation of it. Genesis was no more a threat to him than anything else by the time he arrived on the planet.
His murder spree was pointless and needless and is actually a heck of an example of how distrust breeds issues. Had Kruge just trusted someone who wasn’t a Klingon, people wouldn’t have needed to die. Sure, it would’ve made for a boring and short movie but if we’re looking at this as less entertainment and more of a learning experience, one can see why Kruge’s behavior is in fact wrong. He led with his fear and caused a bigger mess than he could’ve imagined.
Kruge was justified in his fear, but he was far from right.