Sadly you can't, you have to delete each one individually :( Oh, OK
Beat to elite four and receive the national pokedex (to receive the national pokedex your must at least see all of the Pokemon in the sinnoh pokedex that you have already).
Beat the Snowpoint City Gym leader, Candice, then defeat Team Rocket at one of the lakes, then he will let you past.
You cannot catch Lugia in Pokémon Diamonnd or Pokémon Pearl, you will have to migrate one over from a previous game such as Pokémon FireRed or Pokémon LeafGreen or you can arrange a trade with another player in order to acquire Lugia.
play that game alot u cant when u mine the diamonnd that is like the diamond ore
you will have to trade Pokemon with Friends
108 is Spirittomb when you beat the elite 4 the next room is Cynthia's she has one.111 Garchomp Cynthia has one. 139 Milotic Cynthia has one, 148 is azelf 146 is uxie (found at the lakes)
Pokemon are pocket monsters that can be good some times or not but Pokemon are your friends
Get some real friends....
there is no such Pokemon game called Pokemon indigo
for how commonly a Pokemon becomes friends with you it depends on what Pokemon it is, if it's rarer or better it is a lesser chance-it's just like trying to catch a Pokemon with a pokeball.
no