Bug Pokemon Attack Advantages
Bug moves usually do very little damage to most opponents. Trainers with psychic and dark Pokemon may be surprised, though, to find out that bug moves are super effective against them. When a bug move is super effective, it does 200 percent more damage than it normally does. This allows you to knock out dark Pokemon, like Umbreon, or psychic Pokemon, such as Kadabra, in just a few turns. If your bug Pokemon is strong enough, it may need just one turn to knock out a foe. Bug moves are also super effective against grass-type Pokemon like Ivysaur.
Bug Pokemon Defense Advantages
Grass-type Pokemon are at a serious disadvantage when fighting bug Pokemon. Not only are bug moves super effective against them, but grass moves are not at all effective against bugs. Two other types of moves that are not effective are ground and fighting. Ground and fighting Pokemon are almost always physically strong, so many trainers won't expect to be taken down by a bug. Use this knowledge to launch a surprise attack on your opponent.
Bug Pokemon Attack Disadvantages
Bug moves may be powerful against dark, psychic and grass Pokemon, but unfortunately, they are very weak against six other types. For example, shadowy ghost types, like Haunter and Ghastly, fend off bug attacks easily. Steel types, like Skarmory, and Fighting types, such as Hitmonlee, also defend well against bug attacks. Flying, fire and poison Pokemon cannot be easily damaged by bug moves, either. Bug Pokemon usually have other types of moves, though, that are effective against these types of Pokemon.
Bug Pokemon Defense Disadvantages
Bug Pokemon look fragile, but they have only a few defensive weaknesses. Like grass Pokemon, they are very weak to fire attacks. Avoid fire-type Pokemon, like Charizard and Infernape, if possible. Bugs are also weak to rock moves from Pokemon such as Onix, and flying moves from Pokemon like Fearow. Some bugs can learn water moves to combat fire and rock Pokemon, but in general, it is safer to refrain from battling them altogether.