Ash's starter Pokemon was going to be Clefairy but was swapped for Pikachu to make it appealing for boys and girls alike.

In one episode Brock's Geodude participates in an all-Fighting Pokemon tournament. A Geodude, however, is NOT fighting, it's rock/ground. In the original card series there was no rock or ground type, only fighting type to represent all three types.

The Pokemon logo makes one last appearance at the very end of the credits, after the Summit Media Group bumper.

The 4Kids version included removing suggestive content and changing the fate of several characters, as well as editing the story to be much lighter and kid friendly in tone for the US release. Such edits as removal of written Japanese characters on various signs, billboards,etc.; cigar or anything that's a tobacco product, alcoholic like beverages, and any scenes that seem too violent. Ironically, however, the 4Kids Version retained more of the Japanese original soundtrack than the TPCi version did overall The TPCi version would also later in its run follow the same path as the 4Kids version, including censoring alcoholic beverages into orange juice cups by the Sun & Moon Series, removing glitter vomit, Meowth drowning, etc. And it would also censor Ash on a cross in the XYZ Series, as well as a mustache on a character appearing similar to Hitler in the Journeys Series, as well as souls into coffins.

Edited into Neon Genesis Evangelion: ReDeath (2000)