His Weezing helped James capture and defeat Victreebel when it was a Weepinbell in a flashback.
James had to release his Weezing along with Jessie (who had to release Arbok) to save a group of Koffing and Ekans. They strongly cried when they did. Nothing is known of Weezing or Arbok now. They are presumed to still be with the Koffing and Ekans to this day.
|SmokeScreen +||Pokémon Emergency!|
|Sludge +||Ash Catches a Pokémon|
|Poison Gas||The Ghost of Maiden's Peak|
|Tackle||Dig Those Diglett!|
|Haze||The Evolution Solution|
+ indicates this Pokémon used this move recently.* - indicates this Pokémon normally can't use this move.