X-Laws (Did not talk at all but Marco acknowledged Hao)
Hao's followers and Opacho [BoZ monks are not shown]
Note: BoZ monks appear with Hao's followers in the manga version only.
Scenes that are kept the same from the manga
Anna and Yoh's scene where Anna gives him clothes
Ryu reading his poster with Tokagero
Pirika handing ikupasuy to Horohoro
Ren speaking with Bason
Anime and Manga Differences
Note: All these bullet points are anime altercations only.
No implied sex scene
No scene of Tokagero and Amidamaru talking before Anna and Yoh's implied sex scene in the manga.
Yoh, Ryu, and Horohoro talk to each other before leaving to America
Anna and the other shamans know what to do for the second part of the Shaman King fight, reach the Patch Tribe in 3 months. (In the manga, it was a surprise test by the Patch)
Tamao hands a good luck charm to Yoh
There is no package for Yoh (in the manga, Yoh gets his clothes and a package from Anna)
Manta and Yoh have a conservation on the roof about the Patch tribe.
Manta, Amidamaru, and Yoh continue their conservation on the streets about the shamans such as the BoZ monks who talked about Hao-Sama
Silva and Kalim talk about Hao Asakura who is in Tokyo
Silva confronts Hao Asakura and Hao thinks Silva should be grateful to him because Hao is his ancestor (reincarnated)
X-Laws make an earlier appearance and reveal themselves to Hao and Silva.
Difference in transportation: In the manga, Yoh and his friends and other shaman fighters ride the Patch airplane versus in the anime, Yoh and his friends ride Ren's family's airplane
Difference in how Hao meets Yoh: In the manga, Hao only attacks Horohoro and Ren while in the anime, Hao attacks Horohoro, Ren, and Yoh. He attacks Yoh to test his strength and tells Yoh to get stronger.
Altercations in dialogue between the sub and dub
In the manga and the Japanese version of the anime, when Ryu read's Muscle Punch's note on his good-bye poster, Muscle Punch admits he loves him. In the dub version, Muscle Punch admits he meets a lady friend. The reason for this change is to avoid homosexuality.
When Silva meets Hao Asakura: In the sub: Hao tells Silva that if he did not exist, Silva and the Patch will not exist because Hao is the ancestor of the Patch and Silva is his descendant. Hao did not comment much on the X-Laws.
In the dub: After Silva's insult about boys should not play with fire, Hao responds that he will become shaman king and the Patch should just roll the red carpet. In this dub version, Hao does comment about the X-Laws and he says if the X-Laws would become shaman king, they will wipe out everything. Hao tells Silva if he becomes shaman king, he will be "selective" on which people will survive in his shaman empire.
During the scenes where Anna hands the clothes that she made to Yoh, the dialogue is severely altered. In the sub: Anna tells Yoh this is their last night that he will spent in her house. Anna is mad at Yoh for not saying good night to her.
In the dub: Everything is the same, but the dub version cuts out Anna's good night part and adds in Manta's narration about Yoh and Anna's relationship. Manta explains that he does not understand love, but he knows Anna truly loves Yoh.
A dramatic change for no reason. The best reasons for this change is that Fox Box will not allow children to see Japanese characters. Still, the dub version looks more like a letter than a poster.