Legendary Pokémon and Pokémon of your liking.
Well you collect it from the cinninbar laboratory and it should be an aerodactyl if you ask me that is one great Pokemon you should train it
yes you should then when your older sell all your cards for twice as much money as you payed
127 toy pokemon
kill your pokemon and you die
you have to trade with you friend to get all
127 toy pokemon
If you finished the game and caught every Pokemon in leafgreen there are two things you can do try the trainer tower on seven island or get the diploma and collect all the stickers for your trainer card.
The game is technically over but you can still collect Pokemon and go to more places.
you should be able to get an s.s. ticket to ride the ferry to the kanto region then from there you can collect the kanto badges to unlock mount silver where you can battle red/ash.
Collect eggs at pokestops.
yes
You collect it automatically when you walk through the sooty grass.