Gender

A Gender determines wether the Pokemon is male or female in the Pokemon video games. Some Pokemon have a greater chance of being one gender than another, such as Blastoise which has a 87.5% chance of being male, but only a 12.5% chance of being female. There is also moves that will only work when Pokemon are certain genders.

Genderless Pokemon
There are some Pokemon that have no Gender, usually because they are made of lifeless materials like metal. Some of there are Voltorb, Electrode, Beldum, Metang, Metagross, and Ditto. There are also no Legendary Pokemon with genders, except for Latias, Latios, and Heatran.

Gender Differences
Starting in Generation IV, Pokemon in the Video games sometimes and minor visual differences depending on their gender. Some differences were easily visible, while some are hard to see without looking closely.

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