Looking for 2 pokemon to fill the slots in my final roster.

So far, what I plan to use is:
Venusaur
Gyarados
Jolteon
Snorlax


Feel free to offer your ideas.
I'm currently about to fight for the 4th badge, so it's not late in the game or anything.

just pick whatever pokemon that you like..it ultimately doesn't matter, the elite 4 and all gyms are pretty easy with most teams

You could win with just magikarps since they learn tackle/flail in leaf green.

Get a gengar, replace gyarados with lapras and then get a proper flying pokemon

arcanine and aerodactyl/pidgeot

lol pidgeot

Get Haunter/Gengar. Kicks ass!