Just like the original Red and Blue, your character must have the eight gym badges in order to get to the Pokemon League. To get to the league, you must take the route west of Viridian City after you defeated Giovanni. There, you must beat your rival. Once you've beat him, keep going west and enter the building at the end of the route. Go up and keep going up, showing each officer your badges. You will eventually come across the remodeled Victory Road. Make your way through it and you will reach the Pokemon League.
You Don't
No
You Can Go Into This Cave Once You Have Beaten The Pokemon League. Cerulean Cave Is Where Chanseys And Mewto At LVL 70.
be more specific in your question
You Can not
they are birds not wolves
you fill your pokedex
No
you need to catch it first in fire red/ leaf green and migrate it to pearl after you beat the Pokemon league.
darkrai
You Can Go Into This Cave Once You Have Beaten The Pokemon League. Cerulean Cave Is Where Chanseys And Mewto At LVL 70.
yes
migrate it from Pokemon fire red version
no
Your rival is the champion.
Next to Cerulean City. You must have beaten the Pokemon League, and have restored power to the trade thingy on One Island to get in.
hes is the pokemon league champion
beet the league,get the national pokedex get full friendship then evolve it one level