Psychic-type Pokemon are weak against Bug, Ghost, and Dark-type Pokemon. Dark-types are especially useful as they are immune to Psychic moves. Psychic moves also don’t do very much damage against Steel Pokemon or other Psychic types. Here are some Pokemon types and moves that are effective against Psychic-type Pokemon:

Pokemon types that are effective against Psychic-type Pokemon:

• Bug
• Ghost
• Dark

Pokemon that are effective against Psychic-type Pokemon:

• Sableye (Dark/Ghost)
• Scizor (Bug/Steel)
• Bisharp (Dark/Steel)
• Tyranitar (Dark/Rock)
• Aegislash (Ghost/Steel)
• Shedinja (Bug/Ghost)
• Lokix (Bug/Dark)
• Umbreon (Dark)
• Poochyena (Dark)
• Mabosstiff (Dark)
• Duskull (Ghost)
• Polteageist (Ghost)

Moves that are effective against Psychic-type Pokemon:

• Snarl (Dark)
• Crunch (Dark)
• Bite (Dark)
• Sucker Punch (Dark)
• Dark Pulse (Dark)
• Astonish (Ghost)
• Shadow Sneak (Ghost)
• Shadow Ball (Ghost)
• Hex (Ghost)

Its important to note that some Psychic-type Pokemon may also have a second type, which means they may be weak against other types of damage as well.