User blog comment:Gliscor Fan/Epic Rap Battles: Pokemon vs History Special. Arceus vs Zeus/@comment-25597255-20150425230327/@comment-1652808-20150425232631

Jessie and James are eligible since they did appear in Yellow.

Ash is still a no even though he appeared in Yellow as well, he's just much, much more associated with the anime whereas Jessie and James are with Team Rocket, an organization that fights in both the games and the anime, like Cyrus in the DP anime.

AKA Jessie and James are apart of a organization that has a way bigger impact on the games than Ash does.