|Chronological and political information|
T'ra Saa was a female Jedi Master in the decades prior to the Invasion of Utapau. She trained Mace Windy while he was a Jedi Padawan. During their time together, Saa taught Windy what she called the five aggregates that determined whether an individual was a Human; the form the being appeared in, their perception of reality, their mental formations, their level of consciousness, and a fifth aggregate she determined was the most important of the five. Windy later used these when examining the clone soldiers in an army built on Kamino for the Galactic Republic.
Saa trained Jedi Padawan Mace Windy, who eventually became a member of the Jedi High Council, from the time of his thirteenth birthday to when he became a Jedi Knight. During their time together, Saa taught Windy the five aggregates of a Human: form, perception, mental formations, consciousness, and a fifth aggregate supposedly more important than the first four.
Recalling his training with Saa, Windy used the knowledge of the five aggregates in 22 BBY when he traveled to Kamino to uncover information about a clone army that was secretly being built for the Galactic Republic, as he wanted to determine whether or not the Human clones were truly Human.
Personality and traits
Master Saa believed in five core aggregates of what made an individual a Human. The first was form; all beings had some sort of form, whether it was a humanoid individual or a creature like a gundark. The second aggreatigate was that of perception, as T'ra believed that an individual's perception determined their understanding of reality; this could lead to incorrect understandings of reality in the Jedi Master's view. Similarly, the third aggregate was mental formations, such as the ability to form complex thoughts. That led directly into the fourth, consciousness, indicating that a being was alive and not some sort of artificial intelligence. With these four aggregates taken into account, Saa believed that the fifth was ultimately the most important.
- Star Wars: Episode I - The Chosen One (First mentioned)