Mandatory Trainers in Ruby/Sapphire:
Rival 1
Calvin
Aqua/Magma Grunt 1 (Woods)
Roxanne
Aqua/Magma Grunt 2 (Tunnel)
Laura
Brawly
Aqua/Magma Grunt 3 (Museum)
Aqua/Magma Grunt 4 (Museum)
Rival 2
Wally (Mauville)
Vivian
Shawn
Wattson
Cool Trainer Brooke
Aqua/Magma Grunt 5 (Mt. Chimney)
Aqua/Magma Admin (Mt. Chimney)
Archie/Maxie 1 (Mt. Chimney)
Flannery
Norman Trainer 1 (Delcatty)
Norman Trainer 2 (Linoone)
Norman Trainer 3 (Zangoose)
Norman
Aqua/Magma Grunt 6 (Weather Institute)
Aqua/Magma Grunt 7 (Weather Institute)
Shelly (Weather Institute)
Rival 3
Aqua/Magma Grunt 8 (Mt. Pyre)
Aqua/Magma Grunt 9 (Mt. Pyre)
Aqua/Magma Grunt 10 (Mt. Pyre)
Jared
Kylee
Winona
Aqua/Magma Admin (Aqua/Magma Hideout)
Samantha
Tate and Liza
Aqua/Magma Admin (Seafloor Cavern)
Archie/Maxie 2 (Seafloor Cavern)
Wallace
Hope
Shannon/Samuel
Julie
Edgar
Wally
Sidney
Pheobe
Glacia
Drake
Steven