A few notes on Gith:
Their largest residences were massive, lavishly decorated castles that, owing to the xenophobic nature of githyanki, were usually avoided by other creatures in the Astral Plane.
As a people, githyanki were generally proud and xenophobic. They viewed all other races with contempt[27] and were generally unwilling to learn anything about other cultures, including other languages.[14] They viewed Material Plane–dwellers as ignorant and incompetent, or, in worse cases, as potential slaves. They could only bring themselves to use magic items not of githyanki design if they were extremely powerful, and even then by rationalizing that any such items must have been designed with githyanki knowledge to begin with.
Githyanki were typically cruel, arrogant, and aggressive.
After centuries, they developed a hollow culture of shallow and unfinished undertakings, never truly mastering any task or seeing any personal project to completion. This constant interest with novelty also reflected in their dressing style: githyanki were fond of collecting and wearing extremely ornate and elaborate tokens of their defeated foes. It was common for their armor and weapons to be overly decorated with gems, feathers, precious metals, and other ostentatious ornaments.
Although they were loyal to each other, they were also fiercely individualistic.
Sounds pretty straightforward to me.
