These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Shaman King
Angst? What Angst?: Yoh. With a few exceptions, not much seems to bother this guy. Not even being killed (so that he can get some literal Training from Hell, though he wasn't informed of this beforehand)
Well except for that one time when Faust dissected Manta, who at the time was his only friend. That being said, though, he managed to snap out of that funk after a volume or so.
Subverted, Volumes 19-20, show he wants to cure Anna of her Emotion Bomb powers and make Matamune a new Oversoul so he could never see him again, showing how much of a woobie and Stepford Smiler he is.
Anti-Climax Boss: Several. Most notably near the manga's end where the end of the Patch officers' battles are skipped.
Lyserg as well. Some forgive him his trespasses, others do not.
Anna is probably the biggest one, as while some love her, others despise her for her abusive Jerkass tendencies.
Hao gets this too. There are those who like him and those who do not. The ones that don't like him are due to being an overpowered villain (especially in the manga), hypocritical, having a arrogant social Darwinist type attitude, and a Karma Houdini in the manga. Even with his back story in mind, these fans feel it doesn't excuse Hao's actions. In fact, the list described from before makes some fans see him as a more unsympathetic person.
Fridge Brilliance: Yoh and Hao's coffee scene can be really deep despite the context. Through this we learn that Yoh does not hate Hao or he is afraid of him unlike his friends. Yoh instead wishes to befriend Hao but he cannot feel love from Hao since his interest lies more on people that act like him. As a result, Yoh does not call Hao "Brother" but is waiting for the right moment. Yoh himself considers Hao more mature than him even though Anna refers to Hao as a strong baby which makes him try more coffee since Hao called him a kid. Once Hao unconsciously opens up and talks with his mother Yoh finally calls Hao "Big brother" since he is now sure Hao can love.
Yoh and company complain that Dracula shouldn't be able to walk around out in the sunlight, to which Dracula replies by telling them not to confuse him with what human fiction says about him. In the original story, Dracula was also able to walk around in sunlight (though he wasn't able to use any of his powers.)
Growing the Beard: The show was initially a Slice of Life ghost story until Ren came and it became a Shaman of the Week story, then the Shaman Arc starts and the fights get even more epic, and after the awesome fight with Tao Yuan, Hao appears and he and his followers prove to be a Knight of Cerebus faction showing that Anyone Can Die and the fights get much Darker and Edgier. However, it is after Yoh and Anna's flashback aabout how they met, that the story truly begins to hit its stride and the fights have more drama and action than before, in addition to the great Character Development and the story becomes much more interesting
Ho Yay: To say nothing of Ryu's obvious feelings toward Lyserg, many of the guys fall into this. Notable cases being Ren/Horohoro, Amidamaru/Mosuke, Hao's devoted followers, and some subtext between Manta and Yoh. The omake introduces some with Lyserg and a new character, Hudson. Fridge Brilliance on the creator's part, especially if you've seen the latest Sherlock movies.
Lawful Neutral: The Patch Tribe means well and completely abides by the rules of the tournament but they completely stand in the heroes way of stopping Hao Asakura to become the Shaman King knowing well about his goals.
Macekre: Actually not too bad, considering 4Kids' track record, but... changing Hao's name to Zeke? Seriously? He's an ancient godlike shaman from medieval Japan, not a trucker! Also, there's the minor fact that Ren, the Chinese shaman, has a British accent while Lyserg, the British shaman, does not...
While they could've done better than Zeke, could you imagine the reaction some people would have if they saw an Indian namedHao?
Well, in all fairness, while Ren only sounds British, he never claimed to be British.
Also, Horohoro preferring to be called Trey Racer? What?
However, despite a number of name changes (Ryu/Rio, Manta/Mortimer, Over Soul/Spirit Control, etc.), they retained the original name for a shaman's spirit power, "Furyoku", while the VIZ translation of the manga changed it to the more generic "Mana"
Volume 24 gives us zombie soldiers, though they're curbstomped by Team Gandala very quicky.
Volume 26 gives us a Sphinx with very large eyes.
The Ogre Slayer Oversoul can reduce anything to bone
Volume 28 gives us Mastema, a frightening demon of hatred
Volume 29 gives us Yoh smiling as an electrocuted skeleton after Ren's attack.
Bron is a very disturbing Patch. His appearence is gross, his face looks derranged, has a psychotic look (even more after Lyserg burns him) and he can also morph into a huge spider while keeping his head.
Opacho, big time. Also, the X-Laws, particularly Lyserg and Marco.
Too Cool to Live: Most of the human ghosts were this, Mikihisa in the future, and Matamune the split tail cat.
Matamune was one of the few ghosts and characters in general to be genuinely humble, very wise and witty. He displayed amazing powers against the oni and soon disappeared into the spirit realm this was because his mana for existing on the material world was fading, and seemed to imply that because of his predicament, his powers were much lesser than 500 years ago. If Yoh had continued to use Matamune as his ally, it would've been much easier to go through the preliminaries.
Unfortunate Implications: In Funbari No Uta, 7 years has passed since the SF and Hana is 6. This means that Hana was born 1 year after the SF was over and Anna was only age 15 during the SF. I wonder when was he conceived.
This is largely because there was the very real fact that Yoh wouldn't survive the tournament. It's likely that in a normal setting they would have waited. And hey, Yoh was the same age.
Ryu knew they could all trust Chocolove, since he looked so much like Muscle Punch, the one black member in his gang, and the only other black person he knew. To be perfectly fair, though, that really is in line with the kind of character Ryu is.
According to the series, all people who can't see ghost are automatically Always Chaotic Evil, in spite of evidence of a few decent people that appeared in the series who can't see ghosts, but are not jerks.
Villain Sue: Hao. He still has a decently-sized fanbase though, so mileages vary as to how much this trope affects his character.
Can reincarnate himself if killed, which for most of the series isn't even presented as possibility despite all of his enemies, and by the end, rather than plot device introduced that allows him to be killed for good, he instead makes Heel-Face Turn, effectively meaning he gets away with everything he did despite crossing the Moral Event Horizon a dozen times over before the series even began.
One of the few good changes: renaming Chocolove "Joco". The original name is both unwieldy and potentially offensive, while Joco sounds like an actual name as opposed to a racial slur. (Of course, this was done in the official manga translation as well.)
In the VIZ manga, Chocolove's lips were also edited to match those of the rest of the cast as opposed to the large, thick ones he originally had. It pays to be racially sensitive and it was initially pretty offensive. In the anime, the lips remained. (Which is weird considering 4Kids' rep...)
Most African-American characters or those with similar heritage received the same treatment throughout the manga.
Averted big time in the Mexican Spanish dub of the anime, and also in the Mexican Spanish manga translation. In fact, the Mexican Spanish dub of the anime makes Chocolove even more offensive (and funnier) by giving him a Southern accent (who is normally reserved in Mexican Spanish for hillbillies or Native Mexicans alike). There are times when Horohoro is racist to Chocolove in the Mexican dub but these lines are really short lived.
They Wasted a Perfectly Good Plot: Yoh is Hao's twin but we never get to see Yoh developing a power similar to Hao. Hao says that he wants to consume Yoh's soul but we never get what will he win.
The Woobie: Each of the characters can be seen as this, especially Ren, Anna and Lyserg. Yoh seemed to not be this but volumes 19-20 proved this very wrong, after losing his first spirit ally and friend outside of the household.