Latest Pokemon GO information about Shuckle Bug and Rock pokemon. Pokemon Go Generation 2: Bug Type Pokemon are countered by Fire Type. For Example, Slugma (Fire type) will deal increased damage to Shuckle when using any Fire Moves against him in Gym Battles.

Additionaly, since this Pokemon is also a Rock Type.

It will suffer increased damage from Water Type Pokemon, such as Totodile or if damaged by any Water Type Moves.

However, it will also take decreased damage when attacked by Grass, Psychic, Dark, Fire, Ice, Flying and Bug moves.