Grovyle evolves at lv.36,34 or 38 but I'm pretty sure it's 38
graveler doesnt evolve at a level, you evolve it by trading.
Level 20.
Level 18
Level 55
level 30
level 28
Your Aron will evolve at level 32 into Lairon.
it does not evolve enymore when it is a blastoise.
32
Level 31
24
Level 25.