[quote=@Ambra]
[@Sunbather] If you're asking if you absolutely need to evolve every single member of your team, then no. You can have all of your team evolve or none of them! You should just keep in mind that evolved Pokemon are almost always stronger than the ones that aren't evolved. 
[/quote]

Oh, of course! But I mean, in the show there would often be a few trainers that do quite well without evolving (of course, Pikachu is kinda an exception, but generally!) Just wanna make sure I would be allowed to not be dead weight throughout the latter half of the journey by sticking with an earlier stage?