It's either Ninjask or something else but mostly Ninjask.
You must evolve a nincada by leveling it to level 20, though nincada can only be caught via the bug catching contest.
I guess you mean Ninjask... Anyway. You cannot find it. You must evolve it from Nincada. You can find Nincada by searching during the Bug Catching Contest in the National Park.
"ninjask doesn't evolve but if you have a empty slot of your Pokemon team when nincada evolves to ninjask a shedinja will appear in the empty slot."
nincada evolves at level 20 (i think) if you have an empty pokeball when you evolve nincada you will get a shedninja. nincada evolves into ninjask
catch nincada with two spaces in your party and a spare pokeball
catch it in the bug catching contest on Thursday and Saturday
Dunsparce does not evolve.
no hitmonlee does not evolve
You can't evolve magneton in soul silver. You can only evolve it by trading it back to Diamond or Pearl and training it at Mt. Coronet.
No.
Luvdisc does not evolve from, or into anything.
In Pokémon Sapphire, Nincada will evolve at Level 20.