Lairon will evolve once it hits Level 42.
To evolve Mantyke in pokemon black/white 2 you have to level it up with a remoraid in your party then it will evolve into mantine
In Pokémon Black 2, Dragonair will evolve into Dragonite at Level 55.
You can evolve a Gabite by leveling it up to level 48.
In Pokémon Black 2, Croagunk will attempt to evolve once it reaches Level 37.
Darumaka will attempt to evolve once it reaches Level 35.
Pawniard will evolve at Level 52.
level 30
level 42 to glalie
Liepard do not evolve. I believe you mean what level does Purrloin evolve into Liepard which is Lv 20
You aren't able to evolve Growlithe by level, but you would have to use a fire stone to evolve it.
Shelgon evolves into Salamence at level 50 in Pokemon black 2.
i have pokemon black 2 and he evolved at level 40