It evolves into an Electrode at level 30.
voltrob evolves at level 30
Talk to Dawn/Lucas's sister in Sandgem town. When she says that there are voltrobs on a route, go there, catch a voltrob, and then level it up to evolve it.
tentacool, magnemite, voltrob, dranti, croconaw, flafffy, teddiursa, smoochum, elekid, magby, larvitar, carvanha, barboach, corphish, bagon, luxio, cranidos, sheildon & shellos
It is suppose to evolve at the Level of 20,but if you want it to evolve later it can evolve anything after it is at Level 20.
It will evolve by level. Teddiursa will evolve into a Ursaring at level 30.
They evolve at level 36
It will evolve at level 36.
They evolve on level 40
it evolve on level on 64
Pikachu do not evolve by level. They evolve when a thunderstone is used on them.
To evolve a Sandshrew level it up to Level 22 and it will evolve into Sandslash.
Kricketune does not evolve, but a Kricketot will evolve into Kricketune at level 13.