an egg dose not level up it hatches on how many steps you take.on each different egg you need a certain amount of steps.
lv. 70 or up.in heart gold 50
2 emolgas level 25 and a Zebstrika
1,000,000 and 79
Heart-gold version is way better there is two regions to get badges which makes it a hard and a fun challenge and there is a really tough trainer in the game but you have to get professor oak approval to enter Mt.silver fight him and you might lose level 80 up Pokemon.
level 31
Level 26
Victory Road has fairly high level Pokemon in it
The highest level Pokemon you can catch is Lugia, which is level 70. You can find other high level Pokemon at Mt. Silver.
Level 9.
1 in Pokemon Platinum Version
95
Lairon evolves at level 42-45 in Pokemon Emerald version.