What is the best starter Pokemon in omega ruby?

In Pokémon Omega Ruby, the best starter Pokémon often considered is Mudkip. It evolves into Swampert, which gains a dual Water/Ground type, making it resistant to many types and providing strong offensive capabilities. Additionally, Mudkip's final form has access to powerful moves like Earthquake and Waterfall. Ultimately, the choice also depends on personal preference and playstyle.