Glaceon

Diamond / Pearl: As a protective technique, it can completely freeze its fur to make its hairs stand like needles.

Platinum +4: By controlling its body heat, it can freeze the atmosphere around it to make a diamond-dust flurry.

HeartGold / SoulSilver: It causes small ice crystals to form by lowering the temperature of the surrounding atmosphere.

Black 2 +3: It lowers its body heat to freeze its fur. The hairs then become like needles it can fire.

Sun: It can control its body temperature at will. This enables it to freeze the moisture in the atmosphere, creating flurries of diamond dust.

Moon: It freezes its fur into icicles, spiky and sharp, and tackles its prey.

Ultra Sun: It protects itself by freezing its fur into sharp needles. It can drop its body temperature below –75 degrees Fahrenheit.

Ultra Moon: It can instantaneously freeze any moisture that's around it, creating ice pellets to shoot at its prey.

Sword: Any who become captivated by the beauty of the snowfall that Glaceon creates will be frozen before they know it.

Shield: The coldness emanating from Glaceon causes powdery snow to form, making it quite a popular Pokémon at ski resorts.

Legends: Arceus: Glaceon is able to lower its body temperature very quickly. It freezes the atmosphere, creating diamond dust that glitters like gems while it flutters and dances around.