Team Rocket as an organization is Evil. They're not above killing, stealing, kidnapping, butchering. Their base is an underground casino.

I.e., they're the Pokemon Mafia.



Now Jessie and James (and Meowth!), they're a bit more Chaotic Neutral. They don't really fit in with the hardcore criminal element of their teammates. They actually from time to time do something good, like actually helping Ash and the others. They're more like frenemies than villains.