i heard he has 700-1000 hp

thanks man i was beginning to think he had over 2000 hp

he is level 48 so get around level 45, get as meny reviver seeds as you can, also sleep
seeds and oran berrys help alot. as for the fight throw sleep seeds while it awake, set
partner IQ to move youser, and hit him with you strongest move.
Dialga is Steel/Dragon weak to ground and fighting
resistances
normal, electric, water gr***, flying, psychic, bug, rock, ghost, steel, dark
immunities
poison

that was a lot of help!

ur that guy who likes ramian or whatever his name is my friend sed he had 350 hp

He has 600 HP. This is just me, but it helps to calbulate how much damage you've given to
him on a calculator. Thats just me though. I know it sounds a little weird but it worked 4
all my friends at school.

just get in the 60s and hope he misses. that is all that I can do. sorry he hard + i am
9.Literally!

DO NOT, use poison type moves!