Ice-type Pokémon stand out for being able to endure very low temperatures, as well as adapting to freezing weathers. They control ice at will. Their habitats go from the top of mountains, frozen caves and caverns or even the poles.
Many Ice-type moves have chances of freezing the target, which prevents them from attacking until they thaw out.
They're strong against the Dragon type because dragons are reptiles, which are cold-blooded creatures that can't stand low temperatures. Something interesting about this is that the Bug type isn't weak to them.
They're strong against the Flying type because most birds migrate away during the cold seasons. It could also be because flying animals have trouble flying when their wings are frozen.
They're strong against the Grass type because most plants can't stand low temperatures, similarly to reptiles.
They're strong against the Ground type because earth becomes fragile when frozen and ice erodes it.
They're weak against the Fire type because heat melts ice.
They're weak against the Fighting type because some fighters break ice when training. This is similar to the reason why the Rock and Steel types are weak to Fighting types.
They're weak against the Rock type because rock, being harder than ice, can break it.
They're weak against the Steel type because of the fact that metal is much harder than ice, and metal tools like shovels, ice picks, and certain machines are used to shatter ice.
The Water type resists them because ice melts when it touches a liquid.
They resist themselves because ice won't do much damage to another chunk of ice when in contact with each other.
The Ice type has the fewest Pokémon with its type with only 47 unique Pokémon.
The Ice type has the most unique-type combinations with 18 different species containing it along with another type.
The Ice-type is tied with the Ground-type and the Ghost-type for the least Gigantamax forms, each having 1.
Strangely, the Steel type resists the Ice type instead of being mutually weak to or at least neutral to it, despite the fact that very cold temperatures in real life make metal brittle and ruin machines (which many Steel-types such as Magnezone are based off of). Thick ice can also rip apart sheets of steel- an example would be the Titanic, which was destroyed by an iceberg.
In addition, the Rock-type only takes normal damage from them instead of being weak to them, even though ice expands, and if the ice is wedged between the cracks of the rock, the rock will crack as the ice expands, linking to the reason the Rock-type is weak to the Water-type.
Another strange thing is that, since Generation II, the Fire-type resists them instead of taking neutral damage or being weak to them, despite the fact that ice turns into water when it melts, going along with the reason Fire is weak to Water.