If you mean Omanyte, it evolves into Omastar at level 40.
To get omastar, you need to evolve an omayte. Then it evolves into omastar around level fourty. if you have a kabuto, you can not get an omayte unless you trade with someone else. hope this helps. -mewtwometwo
Level 64
Level 43
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
Audino doesnt evolve in Pokemon black and white
Throh don't evolve in Pokemon Black and White.
Virizion does not evolve.
Level it to 41 and it will evolve
watchog does not evolve
Raticate can not evolve, it is a fully evolved pokemon.
Pokemon evolve when you level them up to a certain level, by trading them, by friendship, or by using stones.
Lillipup can evolve at Level 16.