You just need to find another player who have the game and trade it with a link cable.
The only way to obtain a Kabuto in Pokemon Crystal is to trade one over from Red, Yellow, or Blue.
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You can't to get kabuto trade from blue or red.
yes
trade it from red/yellow/blue
Pokemon FireRed/LeafGreen
You need to evolve it from Kabuto, which you need to trade for it.
You can't catch Kabuto in Ruby, Sapphire, or Emerald. you have to trade from Leaf Green or Fire Red.
You can't catch kabuto in emerald, but you can trade him over from leaf green or fire red
Kabuto evolves into Kabutops starting at level 40.
You can, but only if you trade with someone who has the other.
You'll need to trade for it from the older Pokemon GBC games.