OK, this is a review of mine trying to answer the concern of the OP, after my attempt of trying to rewatch the OS Kanto saga (in Japanese) with a back-to-basics heart of simply trying to enjoy an anime as a form of entertainment, without any precognition and preconceived idea of latter sagas. This review will merely focus on Kanto Indigo League saga only, not including Adventure in Orange Islands and Johto League.
Before the review, I'll firstly need a little introductory preface. In the year of 1997 before Pokemon anime actually started to broadcast, the game of Pokemon RGB was in fact not really that popular. So very few audience were gamer of Pokemon RGB before they started watching the anime. But thanked to the success of Pokemon anime, the game also became famous where globalization was decided. Therefore, in fact very few audience at that old time had foreknowledge from the game before they watch the show, hence many didn't know what is Pokemon, many didn't know what to expect from the Pokemon characters. Without any foreknowledge, it will then be natural for the audience to relate themselves to the things they are most familiar with -- the human characters.
Now let's start off with the protagonist of this show. Ash Ketchum, an energetic 10-year-old kid from Pallet Town dreaming to become a Pokemon Master. Well, having a big dream and full of energy is not anything bad, but... from what I saw he just always used his (overabundant) energy in the wrong place, for example right in EP001 he threw the alarm clock which causes him to wake up late; as another example in EP008 he physically dispute with AJ about his training methods; and as another example in EP025 he simply throwing the Pokeball at Mankey without thinking, and also trying to retrieve his hat from it on his own effort. I'm simply putting a few significant examples here, as the list is just too big, if I have to list them all it will be like listing all the episodes, because almost every episode you would find Ash being over-energetic where he has to discharge his energy through some activities, whether that is Pokemon battles or helping others or playing or quarrel with other people.
After rewatching, I rather found personality and characteristics of Ash leaning more towards negative than positive. Firstly he is super arrogant (suggested clearly in EP008), always acted like he is forever right and every other people are wrong (e.g. EP008 and EP065). Secondly he was too emotional to the point of unreasonable, always made decisions based on his emotions but very seldomly decided things wisely using his brain (almost throughout the entire show), I also needed to wonder the decisional logic behind his instructions during each battles. Well, if he did possess any wisdom, then he won't be so ignorant and lack of knowledge, willing to learn and take advices from others from the very start. Thirdly he is super self-centred, always think of himself first, Pokemon only came second and any other human characters came third (one should see it in almost every beginning of gyms, up to EP076 where he prefers to eat before healing his Pokemon, even the tear-inducing EP039, he insisted Pikachu to stay with other wild Pikachus despited that Pikachu followed and yell at him to stay, ignoring Pikachu's feeling in the first attempt). But, in case of Pokemon is jeopardized and endangered, he will oppositely be so self-forgetting to the level of sacrifice his own body in order to save Pokemon (In the very first EP001, also EP004, EP026, Snow Way Out!, EP051, and very first Mewtwo Movie). I would not say that is anything bad, but... does he even realized for many times his Pokemons were jeopardized by no one else but
Ash himself? The worse is that he would finally learn a lesson only when his Pokemon is severely injured. Therefore such mixture of self-centredness and selflessness seems rather very sarcastic and hypocritical. Ah, speaking of that, his ideology of Pokemon should be treat like friends just made him a super hypocrite, because I just don't see him treat his Pokemon like friends. Really for sure, just look at EP001 he drag Pikachu like an item, and alluded so many times from his battle attitude, and the most significant example is Charizard.
And then regarding on battles, I can only say two words of foolish and impulsive. There is basically no strategies and tactics in any battles, not any preparation before gym matches, he doesn't even have basic Pokemon knowledges required for being a Pokemon Trainer (showed in EP056). If you do have to ask the reason leading to his victory of many matches, it would rather be greatly thanks to the intrinsic strength of his Pokemon themselves. Ash himself didn't contribute much as he seldom trained his Pokemon, almost all the gym matches he just barge in and fight, if loses the first trial the first thing came up in his mind is rather any sort of method which could instantly power-up his Pokemon, or any convenient method to defeat his opponent instantly (Pewter, Saffron, I would kind of include Vermillion as well due to at first Ash was thinking of using Thunderstone instead of training), just not trying to train normally and accumulate battle experience like most normal trainer would do (even in Cinnabar, he wasn't thinking of improving his Pokemon, originally just intended to rematch for another lucky try). Most importantly! he never tried to educate and improve on himself as a trainer, even in that (supposed) two months time before Indigo League, he used 99% of the time played his head off rather than doing actual training. No wonder he was mocked and downplayed by Gary Oak.
In terms of human relationship, as he was being too cocky at start and no considerations and caring towards any other, adding on the fact that he was just a newbie without any achievement, it was really irritating seeing he went haughty as soon as he achieved something, feels like others
must then respect him because he achieved something "great" (Good Job AJ in triumph over him in EP008. It was however very disappointing not seeing AJ in Indigo League...). That went a lot better in latter half, but at some occasional times he still shows disrespect towards Brock and Misty, where that subtly showed Ash still thinks he can archieve his goal without any help and assistance from others, a sign showing he was still being arrogant. No wonder Misty was always irritated at Ash throughout the story, not so much in later stage but one could still sense contempt in her attitude towards him. Well Brock was a collected person so he is wise enough to not getting angered by Ash, but being the oldest and taking care of the other two, connive at Ash's unwise imprudent actions just subtly showed the friendship between the two was not that strong as it was assumed by many fans.
But, despite all of these negative character traits he had, there does exist one thing I would praise for as well, which is his righteousness. Whenever he saw things unjust and unrighteous, he would voluntarily poke his nose into it. Whenever he saw someone in need of help, he would tried his best to lend a hand, even the one in need of help is TRio (EP048). Whenever TRio doing villainous deeds, he will battles them to stop them, but when they are not, he won't even bother to hurt them, completely unlike in later sagas where he just beat the three up unarguably without confirming did they did any bad deeds or not. He believed firmly of his ideology and will not be altered by whoever's word despite so many people downplayed him. Yeah, he had magnificient inner fortitude possibly unbreakable and unbendable. ...But, having such great inner strength yet having such personality, that oppositely made his stubbornness more unbreakable. Hence in Ash's case, such strong point is unfortunately adding bonus to his weak point, making his weak point more outstanding.
So, if I have to explain the OS Kanto Ash Ketchum in a simple sentence, that would be a pretentious airhead trying to achieve something he was not worthy to become. Judging from all his actions within the show, despite he is a Pokemon Trainer, but it rather showed what he loved most is merely Pokemon battles, catching came second, training and caring the Pokemon only came at third. As being a protagonist of a kid-friendly adventure story, Ash is really bad and irritating even in the children standard. Also being anime target at children, I can withstand the foolish bullied child Nobita in Doraemon, I can withstand arrogant ones such as Shirobom in Bomberman Jetters, I can withstand the naive ones such as Kirby in Hoshi no Kirby animation, I can withstand the overly hot-blooded Netto of Rockman EXE series. But Ash Ketchum of Pokemon anime, and merely in the very first season...... I can't stand watching.
BTW, as I went through the blogs of Shudo Takeshi, the head scenario writer of Pokemon anime OS Indigo League saga that had already deceased, his original story goal intended for the Pokemon anime was to portray a friendly adventurous world where every children would had dreamed to set out on a journey. Well I would had said such theme did somehow reach to the heart of children (as I was also one of such excited children), but now when I look back from the eyes of an adult spectator, I will now doubt can this theme reach to the heart of children, especially if watching the Pokemon world through the position of Ash Ketchum.
Maybe I'll do another character review for later sagas in the future, but I can't say for sure because this rewatching attempt just greatly wear away my remaining interest for the anime I still kept for all these years. But for now, this is my review of Ash Ketchum during the OS Indigo League saga, from the eye of mine as an adult audience.
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BTW, there exist
another review of mine about the overall OS Indigo League saga. If one is interested, one is welcome to read.