Glass (type)

The Glass type (Japanese: はがねタイプ Steel type) is one of the elemental types. Notable Trainers that specialize in the Glass type include Obsius of Promethea Falls. Before becoming champion and choosing not to specialize, Dillon also specialized in the Glass-type.

The Glass type wasn't available before Generation IV, though it has been commented that if it had been, all of it's moves would have been Special.

Defense
Created to be a special-type resisting counterpart to the Steel-type, Glass is a very good type to use defensively. Pure Glass Pokémon resist 8 of the 17 types, which coupled with high average Special Defense stats, makes the Glass type amazing special tanks. They are also immune to 2 types, something not seen before in a Pokémon type, and both of Glass's immunities are fairly common types, so Glass can stand a lot of punishment.

However, all three of Glass-types weaknesses are predominantly physical-based. Coupled with the Glass-types typically low physical defense makes them useful only in special situations... literally. However most Glass-types are couple with another type, often making up for these weaknesses.

Offense
The Glass-type is notable for being super-effective against two commonly resisted types: The Poison type, which only has 2 other weaknesses, and Electric, which only has one other. However, The Glass-types small list of punishing moves limits it's potential to exploit these weaknesses. Most Glass-types are also dual-types with wide move-pools, allowing it to cover a wide range of the types it is resistant to. Glass-types typically have average Special Attack and below average Attack stats, though there are powerful outliers in both fields.