Pokémon Dual-Type Strategy Guide — Gen 9
Dual-type Pokémon have two types simultaneously — their resistances and weaknesses are multiplied together. A Water/Ground type is immune to Electric (normally 2×) and doubly weak to Grass (2× × 2× = 4×). Mastering dual-type interactions is essential for competitive battling in Gen 9 (Scarlet/Violet). Use BattleDex to explore these combinations instantly.
Calculate your Pokémon's defensive profile
Switch to Defending mode and select your Pokémon's 2 types. The tool shows every type's multiplier against your combination. Identify your 4× weaknesses — these are your priority to cover with teammates.
Find your offensive coverage holes
Switch to Attacking mode and select your primary attacking type. Check the 0× Immune and 0.5× columns — these types wall your move. Then select a coverage type and check if it covers the types immune to your first move.
Build a balanced team type matrix
Repeat for each team member. Ideal teams have no shared type weaknesses and complementary offensive coverage. For example, a Fire/Flying type covers Fairy, Fighting, and Bug super effectively, but needs partners to handle Rock, Electric, and Water.
FAQ
- What are the best defensive dual-type combinations in Gen 9?
- Steel/Water, Ghost/Dark, and Electric/Steel are commonly cited for having few weaknesses. Steel/Water is only weak to Electric, Grass, and Fighting. Ghost/Dark has no weaknesses (Ghost moves miss vs Normal, Dark moves miss vs Psychic — both are immune to each other's usual counters). Always verify with the BattleDex Defending mode.
- Which type combinations have the most offensive coverage?
- Fighting + Ghost can hit every type for at least neutral damage (Normal is immune to Ghost but Fighting is neutral; Psychic is immune to Ghost but Ghost can hit neutral types). Ground + Ice together cover most types super effectively. Use Attacking mode with each type separately to plan coverage moves.
- How does stacking immunities work for dual types?
- If either type grants immunity (0×) to an attacking type, the combined immunity applies regardless of the other type. For example, Ground/Flying: Ground is normally hit by Electric 2×, but Flying is immune (0×) to Ground moves, so Ground/Flying is immune to Electric. The same logic applies to Ghost's immunity to Normal/Fighting.
- Does the Tera Type mechanic in Gen 9 affect this calculator?
- Tera Type (Terastallization) replaces a Pokémon's type temporarily during battle. BattleDex calculates based on the selected types — if your Pokémon has Terastallized to a new type, simply select that type alone in the calculator to see the Tera matchup.