Ground-type Pokémon have powers and abilities related to control of ground and earth. Ground-type Pokémon are afraid of water, like Rock-type Pokémon, unless they are Water type. Many Ground Pokémon are also partially Rock type.
These Pokémon are normally found in caves or rocky terrains, with the exceptions of some dual typed Pokémon. One bad thing about them is that they can't normally come off the ground, such as Diglett and Dugtrio, even though they are pretty good combatants when they are below the Earth's surface. They have powerful moves such as Earthquake and Fissure.
Zygarde 100% has the most HP of all Ground-types (216)
Ting-Lu has the highest HP of all Ground types when Zygarde does not have the signature ability called Power Construct (155)
Primal Groudon has the most Attack & Sp. Atk of all Ground-types (180 & 150)
Mega Garchomp has the highest Attack of all non-Legendary Ground types (170). But if Kantonian Marowak has Thick Club, Marowak has the most Attack of all non-Mega Evolved, and non-Primal Ground types (160).
Mega Camerupt has the highest Special Attack of all non-Legendary Ground types (145)
Incarnate Landorus has the most Sp. Atk of all non-Paradox, non-Mega Evolved, and non-Primal Ground types (115)
Mega Steelix has the most Defense of all Ground-types (230). However, when Onix holds an Eviolite, Steelix's pre-evolution has the highest Defense of Ground types (240).
Claydol and Toedscruel has the most Sp. Def of all Ground-types (120). But when Toedscool has an Eviolite item, Toedscruel's pre-evolved form has the highest Special Defense of all Ground types (150).
Dugtrio has the most Speed of all Ground-types (120)
Primal Groudon has the highest base stat total of all Ground-types (770)
They have no effect against the Flying type because something that is flying doesn't touch ground, therefore, they don't get affected by earthquakes and Earth shifts.
They're strong against the Electric type because in the true x2 existent nonfiction life, the ground is a natural sink of electrons, and electrical appliances don't work when filled with dirt. Besides, earthquakes destroy power lines. Two of which before are the reasons that the Ground type is immune to the Electric type.
They're strong against the Fire type because dirt, mud, and sand are usually used to put off a fire, that's because the ground suffocates the fire, leaving it without any oxygen.
They're strong against the Poison type because if you drop any venom into the ground, this ends by disappearing. Alternatively, it could be because while pollution has devastating effects on organic life, it doesn't really have an effect on the Earth itself.
They're strong against the Rock type because a sandstorm can erode rocks, also because an earthquake can break rocks.
They're strong against the Steel type because a sandstorm impedes machines like cars, because the oil lubricates their gears and with sand, dirt, or mud, the oil doesn't work. Also, earthquakes destroy metallic structures. Curiously, there are tools made out of steel like shovels, which are used to dig inside the ground.
They're weak against the Grass type because plants absorb minerals from it and open through the ground using their roots. Also, buildings made of wood withstands earthquakes.
They're weak against the Ice and Water types in reference of erosion. Also because earth becomes weak when it's wet or frozen.
The Bug type resists them because many bugs like worms live inside the ground and many of them eat it. And burying a bug in sand, dirt, or mud will result in the bug digging its way out. Something curious about this is that they're not weak to the Bug type.
Trivia[]
The Ground type is tied with the Ghost type and the Ice type for the least Gigantamax forms, each having 1.
The Ground type is tied with the Flying type for the least type specialists, both having 4.