ability score increase:
When determining your character’s ability scores, increase one score by 2 and increase a different score by 1, or increase three different scores by 1.
age:
Gith reach adulthood in their late teens and live for about a century.
alignment:
Githyanki tend toward lawful evil. They are aggressive and arrogant, and they remain the faithful servants of their lich-queen, Vlaakith. Renegade githyanki tend toward chaos.
Size:
Medium
speed:
Your base walking speed is 30 feet.
Languages:
Your character can speak, read, and write Common and one other language that you and your DM agree is appropriate for the character. The Player’s Handbook offers a list of languages to choose from. The DM is free to modify that list for a campaign.