By choosing one of those Pokemon at the start of the game, and then trading other Pokemon with other people to get the rest of the starters.
Treecko, Torchic, and Mudkip.
torchic, mudkip and treeko
The starting pokemon for pokemon ruby, sapphire, and emerald are all Torchic, Mudkip, and Treeko. Irepeat, Torchic, Mudkip, and Treeko.
mudkip then treeko, then torchic
treeko,torchic,mudkip
Torchic, treeko, and mudkip
Mudkip, Treeko or Torchic
torchic mudkip treeko
you can choose a Torchic,Mudkip or a Treeko
torchic,treeko,mudkip
Treeko, Torchic, and Mudkip. My suggestion is that you choose Mudkip as your starter pokemon.
you can start with torchic, mudkip, or treeko torchic is fire, and evolves in combuskin, and then blazekin (spelling?) mudkip is water, and evolves into marshtomp, and then swampert treeko is grass, and evolves into grovile and then skeptile