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

Additionaly, since this Pokemon is also a Dark Type.

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

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