Jolteon does not evolve, but to get a Jolteon you need a thunderstone to evolve an Eevee into Jolteon.
Pachirisu does not evolve :(
level 40
Level 30.
Level 10
level 25
it will evolve at level 21
It will evolve at level 48
Pachirisu does not evolve :(
Arbok does not evolve
level them up
At level 10.
level 44
level 26
level 26
Level 24
Level 48.
Level 30