Trainers who really want to be the best in Pokémon Brilliant Diamond and Shining Pearl will have to embrace the idea of the type's strengths and weaknesses. All types of Pokémon have other Pokémon that they are simply better at in battle. Knowing the best Pokémon to defeat depending on your opponent is very important.
It can be difficult to keep all of this information in mind, so below you'll find a quick and easy cheat sheet with all the information you need for each type. If you're looking to quickly find something to use against a particular type, find the enemy type on the left, then follow the weak points column to find out what to use against it.
Remember, super effective against means it will do the most damage to that type, while not very effective against means that you are practically wasting your attacks on enemies in that section.
| Market | Super effective against | Not very effective against | Weaknesses | Immunity against | No effect |
| Insect | Dark, Grass, Psychic | Combat, Flight, Poison, Ghost, Steel Fire | Fire, Fly, Rock | ||
| Dark | Ghost, Psycho | Fighting, Darkness, Fairy | Insect, Fairy, Fighting | ||
| Dragon | Dragon | Steel | Dragon, Fairy, Ice | Fata | |
| Electric | Fly, Water | Dragon, Grass, Electric | Land | Land | |
| Fata | Darkness, Dragon, Fighting | Fire, Poison, Steel | Poison, Steel | Dragon | |
| Pugnacious | Dark, Ice, Normal, Rock, Steel | Insect, Fairy, Flying, Poison, Psychic | Fairy, Fighting, Psychic | ||
| Fire | Insect, grass, ice, steel | Dragon, Fire, Rock, Water | Earth, rock, water | ||
| Flying | Insect, Fight, Grass | Electric, Rock, Steel | Electric, Ice, Rock | Land | |
| Ghost | Ghost, Psycho | Dark | Darkness, Ghost | Normal | |
| Erba | Earth, rock, water | Insect, fire, flight, grass, poison, steel | Insect, fire, flight, ice, poison | ||
| Land | Electric, Fire, Poison, Rock, Steel | Insect, Grass | Grass, ice, water | Electric | |
| Ice | Dragon, Fly, Grass, Earth | Fire, Ice, Steel, Water | Combat, fire, rock, steel | ||
| Normal | Rock, Steel | Pugnacious | Ghost | ||
| Poison | Girl, Erba | Ghost, Earth, Poison, Rock | Earth, Psychic | Steel | |
| Psychic | Fighting, poison | Psychic, Steel | Insect, Dark, Ghost | ||
| Rock music | Insect, fire, flight, ice | Combat, Earth, Steel | Fighting, grass, earth, steel, water | ||
| Steel | Fairy, Ice, Rock | Electric, Fire, Steel, Water | Fight, fire, earth | Poison | |
| Acqua | Fire, Earth, Rock | Dragon, Grass, Water | Electric, Grass |
