No you cannot catch Celebi in Pokemon Emerald.
No I don't believe you can catch a ledyba in emerald
You can onl catch LUNATONE in SAPPHIRE but you can catch solrock in emerald
yes you can catch a Manaphy on emerald. (if you have a game shark)
Yes, You can catch Groudon in Pokemon Emerald.
It is Ho-Oh and you cannot catch it on a gameboy you need an emulator on a PC to catch it and even with that you need cheats.
You can catch Hoho at night.
navel rock
no
the elite four.
You must trade it from Emerald, FireRed, or LeafGreen versions.
master ball.
you don't.....you trade them......
first you have to use cut on all the grass in the game then hoho will come and attake you.
You still play pokemon, wow your a NERD!!!!
Yes. You will be able to find Hoho on top of the bell tower after you have the rainbow wing and the clear bell and you can get lugia too
you need to migrate it from one of those original games