yes his name is saleaf
Yes, there are many Normal-type Pokemon that can learn Shadow Ball, among other Ghost-type moves, by TM. This is useful for beating Ghost-type Pokemon, since Normal-type Pokemon are immune to Ghost-type attacks.
Water Pokemon with water attacks or Grass Pokemon with Grass attacks
Ghost type Pokémon.
Ghost-type Pokemon are weak against Dark and Ghost-type attacks. Any type can damage a Ghost-type, except Normal and Fighting-type attacks.
Psychic. Although all types of attacks excep normal attacks affect a ghost pokemon but psychic is most effective.
Ghost and Dark attacks are super effective against Ghost type pokemon.
Im pretty sure ghost are weak against other ghost attacks and dark attacks.
Ghost type attacks are super effective against both psychic and ghost type pokemon.
There is no Ghost Pokémon that can learn Helping Hand.
Serperior cannot learn any ghost type moves.
Ghost is a type of pokemon. They cannot be affected by normal or physical attacks. They are weak to physic and dark type moves.
Any ghost type Pokemon can learn it.