Ruby and Sapphire brought abilities into Pokemon for the first time, and that one change reshuffles everything. Slaking has 670 BST but Truant halves its output. Swampert only has one weakness (Grass) and gets both Earthquake and Surf for STAB. Gardevoir is pure Psychic here since Fairy type doesn't exist yet, and 125 Sp. Atk hits hard with few resists. Only what's catchable in Ruby and Sapphire's Hoenn counts here — no national dex imports.

How to read this tier list
Elite Pokemon
Base Stat Total of 600+
Legendary
Story-central, catchable in-game
Mythical
Rare, event-exclusive
BST
Base Stat Total (sum of all 6 stats)
Fast with strong offense
Bulky with good offense
Very high offense, slow
Extremely bulky, low offense
High offense but fragile
Bulky support, low offense
Fast utility, momentum control

  • Swampert. Water/Ground typing means just one weakness (Grass), and it gets STAB Earthquake plus Surf. 110 Attack handles most threats physically. Gardevoir is the best special attacker at 125 Sp. Atk with Psychic STAB. For raw stats, Salamence at 600 BST is the strongest non-legendary, but you can't get Bagon until late in the game.

  • Mudkip. Swampert's Water/Ground typing gives it one weakness and STAB Earthquake. Handles Roxanne (Rock), Wattson (Electric immunity), and most late-game threats. Torchic evolves into the Fire/Fighting Blaziken with solid mixed attacking stats. Treecko is the hardest start since Grass doesn't hit many Hoenn gyms super effectively.

  • Gen 3 introduced abilities — passive effects every Pokemon has. They completely change the rankings. Slaking has 670 BST (higher than most legendaries) but Truant forces it to skip every other turn, dropping it well below its stat line. Breloom gets Effect Spore to punish contact moves. Intimidate on Gyarados lowers the opponent's Attack on switch-in. Check each Pokemon's ability before adding it to your team.

  • Ruby gets Groudon (Ground, Drought) and Sapphire gets Kyogre (Water, Drizzle). Kyogre is the stronger pick since Water STAB in rain is devastating and it has fewer weaknesses. For regular exclusives, Ruby has Zangoose while Sapphire has Seviper. Zangoose hits hard with Swords Dance, but the legendary difference matters more for overall team strength.

  • Swampert (starter), Gardevoir from Ralts on Route 102, Breloom from Shroomish in Petalburg Woods, Manectric from Electrike on Route 110, Swellow for Fly and Guts-boosted attacks, and Aggron from Aron in Granite Cave. That lineup handles the gyms, Elite Four, and both rival teams (Aqua or Magma depending on version).

  • Only post-game. Rayquaza sits at Sky Pillar at Level 70 after you've beaten the Champion. It's 680 BST and one of the strongest Pokemon in any game, but it won't help your main playthrough. Your version's box legendary (Groudon or Kyogre) is available before the Elite Four and nearly as strong.

  • Slaking looks incredible at 670 BST, but Truant means it only attacks every other turn. Usable if you play around it, but inconsistent. Feebas is notoriously hard to find and evolving it into Milotic requires maxing out its Beauty condition, which is tedious. Most Bug-types peak early and fall off hard before the fifth gym.