thunderblade12
Well-Known Member
I think it's pretty obvious who won't leave when the BF rolls around:
Pikachu
Monferno
Grotle
Staraptor
Piplup
Buneary
Mamoswine
Croagunk
Happiny
That all seems likely. I'm not to sure about Buneary though, I think there's a pretty good chance it could be leaving.
And yeah, there are no patterns.
The writers have the characters catch the starters and depending on how popular they are, they decide whether they're going to evolve it into a "cool" powerhouse pokemon or continue to pimp it's cute, popular, plushie-seeling baby form.