Pokemon Gold, Silver and Crystal Elite Four: Will

I'm going a little off from what I normally do, but since I've got a friend in need I'm doing an Elite Four bio for Will, the first member of the Elite four in GSC. His specialty is Psychic type.

Will's Pokemon are as follows:

Xatu:
Lv. 40
Types: Flying and Psychic
Item: None
Attacks: Quick Attack, Future Sight, Psychic, Confuse Ray

Exeggutor:
Lv. 41
Types: Grass and Psychic
Item: None
Attacks: Reflect, Egg Bomb, Psychic, Leech Seed

Slowbro:
Lv. 41
Types: Water and Psychic
Item: None
Attacks: Amnesia, Curse, Psychic, Body Slam

Jynx:
Lv. 41
Types: Ice and Psychic
Item: None
Attacks: Ice Punch, Double Slap, Psychic, Lovely Kiss

Xatu:
Lv. 42
Types: Flying and Psychic
Item: None
Attacks: Quick Attack, Future Sight, Psychic, Confuse Ray


To fight this member of the Elite Four, I would suggest a strong Ghost type like a Haunter or Gengar, or Dark type, which by this point the only one you can get is Umbreon. Make sure that your Pokemon are at least lv. 45 before you enter the E4 fight!