Lapras doesn't evolve. But maybe in future generations, there will be a Lapras evolution!
After all, they did just announce the new Pokemon games of Generaton 5... ;)
graveler doesnt evolve at a level, you evolve it by trading.
Level 18
Level 20.
level 30
Level 55
level 28
Your Aron will evolve at level 32 into Lairon.
it does not evolve enymore when it is a blastoise.
Gyarados does not evolve into Lapras.
24
32
Level 31