Cameron

Cameron is the male protagonist of Pokemon Amethyst Version and Pokemon Garnet Version. He will appear as a rival if you did not pick him. He will pick the starter weak to yours.

Professor's Lab

 * Grabby, Level 5, Tackle, Growl, Vine Whip (If Firabby was chosen)
 * Firabby, Level 5, Tackle, Growl, Ember (If Wabby was chosen)
 * Wabby, Level 5, Tackle, Growl, Water Gun (If Grabby was chosen)

Route 2

 * Grabby, Level 11, Tackle, Growl, Vine Whip, Leech Seed (If Firabby was chosen)
 * Firabby, Level 11, Tackle, Growl, Ember, Double Team (If Wabby was chosen)
 * Wabby, Level 11, Tackle, Growl, Water Gun, Water Sport (If Grabby was chosen)
 * Emolga, Level 13, Acrobatics, Thundershock, Volt Switch, Baton Pass

Trivia

 * Cameron is the first protagonist to not wear a hat.