Universal Personality Profile

Characters in Traveller are precisely defined using the Universal Personality Profile (UPP), which expresses the basic characteristics in a specific sequence using hexadecimal (base 16) notation. Characteristics are listed as a string of six digits, in the order originally rolled: Strength, Dexterity, Endurance, Intelligence, Education, and Social Standing.

For example, a character who is totally average in all respects would have a UPP of 777777. If, instead, the individual were highly intelligent, his UPP would be 777B77 (the B in the fourth position indicates an Intelligence of 11). While the use of the UPP is optional, it allows the Referee (and the players) to tell at a glance the characteristics of persons they encounter and deal with.

The Universal Personality Profile is also referred to as the Universal Character Profile(UCP) so as not to conflict with the Universal Planetary Profile. The word character refers to both player and non-player characters (NPC)