The TARDIS arrives on the planet of the Gonds, who are ruled and taught in a form of self-perpetuating slavery by the alien Krotons — crystalline beings whose ship, the Dynatrope, crash-landed there thousands of years earlier after being damaged in a space battle.
Rate and review below:
The Krotons is an unfairly looked upon story that for some reason happens to have a really low score. Sure it may not be the best of the best when it comes to Doctor Who stories, but it has some great themes and the atmosphere is great. I adore the religious style themes with the Krotons being these godlike figures who are never seen but blindly obeyed by the Gonds. This leads to internal conflict between the Gonds on what the best way of fighting the Krotons is, once they are exposed for murdering countless Gonds, with some choosing to brashly fight without a second thought, and other maintaining that planning and strategy will be more important. This all ends up working well in showing the effects of corruption on a large scale and is probably my favorite aspect of this story. My second favorite aspect is definitely just the Tardis team. Zoe is incredible here with some great lines and Jamie has a nice little arc where he manages to escape the Kroton machine and free himself on his own. Sure there are some problems with this story, such as the set design being weak, but nothing atrociously bad like people would have you think.
Honestly I forgot half of what happens here. I think that’s the worst thing about this story, it’s forgettable. At first I thought this would just be the dominators again because their designs are similar but aside from being boxes, I don’t think so.
I don’t hate this story, I think when you actually watch it it’s decent. It’s just that it comes straight after the invasion, so it’s hard to follow up.
What I like about that story is that it’s a sort of little fun break in the middle of a season with many 6 parters and a gigantic 10 parters, but yes it’s very forgettable. Also the introduction of the HADS concept witch really should have been used more in the future of the show.
This was a comment from when I last watched this:
Interesting idea, but unfortunately it ends up being rather dull and uninspired. It feels like a 2-parter stretched to 4 parts. The performances are solid, but are ultimately wasted here.
I keep praising them, but the costume department has done another incredible job in this episode. The guest actors costumes are simple, but they convey the concepts of the story well. The regular cast costumes are on point too in this serial.
3/5
This is an old review! But Queen Kroton needs to add her two cents to this one:
The Krotons was one of the first Classic Who stories I saw, long before I began to watch the 60s - 80s run seriously. I borrowed DVDs from the library when I was much younger, getting a bit of a taste of each Classic Doctor. I may be mistaken, but I believe this was the first Second Doctor story I ever saw, although that may’ve been The Tomb Of The Cybermen. Anyways, it had been a long time since I had seen this, and as I’m making my way through the final seasons of the Classic series that I have yet to see, I have come to it yet again.
This really isn’t all that great. It’s a middling story. And usually that’s not an anomaly in any given season of Who, but the Troughton era reaches a far more consistently high hit rate than most Doctors achieve. Four parts is a good length to tell this story, since there’s really not that much going on at all. The Krotons are manipulating the Gonds using supercomputers, and leading the brightest among them to their deaths. The Second Doctor, Jamie, and Zoe come to intervene and figure out how to put a stop to the Krotons’ plan. It’s really quite formulaic, and doesn’t really do anything novel or exciting. The Gond politics aren’t dull per say, but they aren’t all that compelling either. Same thing with the guest cast as a whole; nothing standout, but nothing bad, other than maybe some fairly underdeveloped and undercooked characters. Zoe is quite good here, getting to show up the Doctor a bit with the computer assessment. It’s a shame this TARDIS crew doesn’t last all that long, because for the past three serials, they’ve really sparked as a group dynamic. Jamie and the Doctor are up to their usual standard, but again, neither do anything all that new or exciting.
This is a pretty inoffensive story in most regards, just a little bit of a palate cleanser between the very long and grand The Invasion and the spectacle of a returning villain in The Seeds Of Death. I say in most regards, because the problem of this story is the titular Krotons. They’ve got to be one of the most underwhelming monsters in nearly every aspect. Their plan is stock standard and boring, and nothing at all sets them aside or differentiates them from a human villain, that could accomplish the same purpose. This leaves us with lumbering hunks of styrofoam and yes, cardboard. Their voices get quite grating, their movements are very clunky, and they’re defeated laughably easily. The Krotons as a story has some themes that are solid, but a very weak villain that fails to tie it together. The creature design is very unconvincing, which kinda takes me out of this one. But hey, at least this story gives me something to make fun of!
I have a soft spot for this one. It’s very meh but I can’t bring myself to dislike this one, the Krotons are just so goofy looking! Plus it’s one of the few s6 stories that doesn’t overstretch it’s length beyond what it needs to be. 6.5/10.
This always feels a little meh, the interactions between the doctor and Zoe solid and fun. Plus it’s a nice show of Zoe’s intelligence but the story with the guest cast is kinda boring. The Krotons kinda clunky looking in a bad way. Unfortunately kinda forgettable second doctor serial. 
You know what the Krotons really needs Jackie Tyler - big finish 2023
Nah but really this ep sucked
Bit of a whimper compared to the previous story, a good concept nonetheless
In my mind worse and more boring than the dominators. The only thing I like in this one is that Zoe can ace the quiz and the Doctor is struggling
I like The Krotons, although some of that is it was one of the first Troughton stories I saw in the eighties. Having Zoe ace the Krotons test while the Doctor has problems, so ZOe helps him is shows how smart she is, while Troughton’s Doctor is a bit scatterbrained.
The underlying story is one of a Master/Slave society with Krotons the masters and Gonds the slaves. When the TARDIS team arrives and we see Gonds already on the verge of fracturing into factions supporting the Krotons andthose opposing them. The team’s arrival acts as an accelerant to this.
And once again, after causing profound changes to the local society, the TARDIS team up and leaves whithout a thought of what they have wrought.
6/10
Intergalactic. Planetary. Planetary. Intergalactic. Krotons Cannot Die. Zoe is here and being autistic yay :). My review below.
I never chimed in on this one, did I? Mostly a forgettable story, but I do remember Zoe being great in it, and potentially smarter then the Doctor.