First of all, allow me to state that this review is based on the dubbed version of Dark Cat. I'm sure the original Japanese version of Dark Cat is better than the dubbed version, but I've only seen the dubbed version. Since I can only review what I've seen, the score I give to this anime will apply only to the dub version. Besides, I'm pretty sure the other reviews on Anime-Planet cover the subbed version with the original Japanese audio; so, it's about time for somebody on this site to review the dubbed version.
The story is at least fairly interesting, albeit a bit of a mess. Basically, two cat shifter dudes try to defeat evil and confront an evil cat shifter who is somehow using the negative energy in people to turn them into blobbish tentacle demons. There is a fairly important side plot involving a girl (who took care of one of the cat shifter dudes) who has seemingly unrequited feelings for her childhood friend who has been acting weird. As I said, the story is fairly interesting but there are lot of things that are either not explained very well or not explained at all. Of course, this is only an one episode OVA, so it's expected that there would be some loose ends. Still, I think this ova would've been a bit better if there was some more explaination and/or backstory.
In my opinion, this is the best part of the ova. While the animation isn't amazing, it's still pretty good for an early 90's OVA. I thought the blobbish tentacle demons looked cool. Also, the character designs were pretty decent. I especially liked the long-haired cat shifter dude's design (he is hot *drools*). It also has decent action scenes.
Again, as a reminder, I'm reviewing the English dubbed version of Dark Cat. Probably the biggest difference between the Japanese version and the English dubbed version is this category. The voice acting in the English dub ranges between "meh" and "god awful" (with the majority of the voice acting being in the "god awful" side of the spectrum). I'm usually pretty forgiving when it come to English dub voice acting, but the voice acting in this dub is so bad that it makes even me cringe. What makes things even worse is that alot of the sound effects seem to be either muted or missing completely (ex: something goes through a glass window but there is no sound to go with it). Since the other reviews don't mention this, I'm guessing this is only a problem in the dub version. Obviously, something went very wrong when they dubbed this anime.
The characters are fairly one dimentional and don't get much development, but that is to be expected from a one episode OVA. I suppose none of the characters are too annoying (other than the bad voice acting). Well, I guess the childhood friend who acts like he is depressed (or stoned) all the time is kind of annoying, but he is also the one who get's the most development (though it's more of an epiphany than actual development).
This is probably the worst dub I've ever seen of an anime (and I'm more forgiving of English dubs than most people). The bad voice acting and lack of sound effects really ruin the experience. There are many OVAs that are better than Dark Cat, but if you really want to watch Dark Cat, I reccomend that you watch it with subs in the original Japanese audio (I haven't seen the sub version myself, but surely it's better than the dub version). Only watch the dub version if you are a massochist, want to mock the bad voice acting, or want an example on how NOT to dub an anime.
Story: This was an interesting anime, to say the least. This story had about three different plots going on at the same time, making it hard to follow which story is being told when, and for what purpose. The "main" story that is trying to be told is of two brothers, Hyoi and Ryoi, who infiltrate a school in order to find a source of evil behind the disappearances of random people. Very quickly these brothers find the mastermind behind the disappearances, a man named Jukokubo. Hyoi and Ryoi also encounter some monsters that look like blobs with tentacles, but later find out it is the evil emotions within a human that bring about the form, so the story also contains a bit of gore. What is funny about these three is they can all switch between a cat and human form. Hyoi and Jukokubo are from a group called Dark Cats, though Hyoi left because Jukokubo is evil and is the one who taught him everything he knows (as I understand it).
One of the other plots trying to force itself to the front is centered on a girl, Takako, who is in love with her childhood friend Hiroki, who does not share her feelings. This plot line is presented with about as much time as the previous plot, which makes it difficult to tell a complete story on either end, with the 60 minute time limit.
In the end, I decided the story deserved a five rating. The base idea was pretty good, but was not capitalized on. The story had a bad habit of jumping from one story and back to the next, but making no connections in the process. Other parts of the story made no sense, such as Hyoi needing healing by a tree in a forest. By the end, the story had more holes than Swiss cheese.
Animation: The animation fluctuated a little too much. In many parts, the animation was pretty poor, but in other spots, it was well done. The best animations were typically done with the few gory parts. Due to the large jump between poor and great animations, this was given a rating of 6, though the good animation scenes saved this from a lower score.
Sound: The voice acting was not bad, but it was not great by any stretch of the imagination. The voices for Hyoi, Ryoi, and Jukokubo were the better of the lot. The music was just a crazy dash of horrible 80's teen music, with the occasional piano piece set in the most emotional parts. Other than the piano parts, the rest of the music was placed in bad spots and ruined some of the moments. The sound effects were not too bad either. They were used appropriately and moderately, not bogging the story with unnecessary sounds. The piano parts and the sound effects were really the saving graces of this anime's sound, warranting a six rating.
Characters: There were too many characters with too much air time to develop any well enough. Between Hyoi, Ryoi, Takako, Hiroki, and Jukokubo, it is difficult to focus on anyone character enough. This is one of the weakest points of the story. The situation between Hiroki and Takako is explained a little bit in the end, with just enough to have a basic idea of what happened between them, but a background story on them and the others would have really helped develop a better idea of who these characters were and why the viewer should care about them. I felt a five was necessary, due to the lack of development of any of the characters to a better extent.
Overall: This anime had some really neat ideas abounding, but decided to lose itself among all the random happenings. If this OVA had been given a little more attention and made a little longer or given a second episode, the story could have been really interesting and worth the watch, but as it stands now, it is hardly worth a mention.