IceBug
Ice and Bug types: weaknesses, resistances and Pokémon
Ice and Bug Pokémon take quadruple damage from Fire and Rock moves, take double damage from Flying and Steel moves and resist Grass, Ice and Ground moves.
The balance is even: 4 weaknesses and 3 resistances or immunities.
Ice moves are super effective against Grass, Ground, Flying and Dragon and not very effective against Fire, Water, Ice and Steel. Bug moves are super effective against Grass, Psychic and Dark and not very effective against Fire, Fighting, Poison, Flying, Ghost, Steel and Fairy.
To beat these Pokémon, your best pick is Fire and Rock moves. Avoid Grass, Ice and Ground moves, which deal little or no damage.
There are 2 Pokémon with this combination, such as Snom and Frosmoth.