List of unnamed Kreetassans.
Abductee []

A Kreetassan
This individual was abducted by the automated repair station, probably while his starship was in dock. While Captain Archer and T'Pol were searching for Travis Mayweather, whom the station had also kidnapped, they saw this Kreetassan among the abducted individuals. He was there for a long time, and the brain damage caused by the process could not be reversed. He was presumed killed, along with the others when the station was destroyed soon after. (ENT: "Dead Stop")
Aides []
These two aides accompanied their captain aboard Enterprise NX-01 in 2151. They also left with their captain after he was insulted by Archer. (ENT: "Vox Sola")
Captain []

The Kreetassan captain
The captain visited the Enterprise. The visit did not go well, however, as the Kreetassan became insulted, and left the ship. When Hoshi Sato asked the captain why he was insulted, he replied, "you eat like you mate."
Later when a symbiotic alien boarded Enterprise, capturing a few of the crew members, including Archer, the Enterprise contacted the Kreetassans. The captain was aware of the lifeform and knew its home planet, but before he would help, he demanded an apology. Mayweather asked him to explain what they had done, and the captain explained that putting food in their mouth is like mating to them, and that it is offensive. He explained that the Kreetassans eat the same way, but do it in private. Mayweather apologized and the captain gave Enterprise the coordinates for the lifeform's planet. (ENT: "Vox Sola")
Head of state and aides []

Kreetassan head of state
The head of State and aides presided over a ritual of apology preformed by Jonathan Archer because Porthos had urinated on an alvera tree, which was considered by the Kreetassans to be a cultural treasure. (ENT: "A Night in Sickbay")
Merchant []
A merchant recommended the deuterium mining colony on an unnamed planet to Enterprise to refill their supply of deuterium. (ENT: "Marauders")
Patron []

A Kreetassan bar patron
This visitor was in a bar on Pernaia Prime's moon. When T'Pol was looking for Menos, a Vulcan fugitive, he got between them, allowing Menos to attempt an escape. (ENT: "The Seventh")
Tourists []
In 2382, these three tourists were present aboard the Cosmic Duchess cruise ship, where they played with a beach ball near the Risa Bar. While playing, they were approached by an undercover Lieutenant jg Brad Boimler, who absentmindedly took a sip from his drink, greatly offending the Kreetassans. Unaware of what caused their outrage, Boimler then took a bite of a small snack from a nearby platter, further incensing the trio, to the point that one of its members attempted to physically assault him. Fortunately for Boimler, Commander Jack Ransom interceded, saying that "[his] bro [was] ignorant of [their] ways", and that "He did not mean to offend." As the tourists walked away, Ransom informed Boimler that "Kreetassans consider[ed] eating to be more intimate than mating." Boimler then alleged that he was actually aware of that fact, but had momentarily forgotten, as his thoughts were preoccupied by other matters. (LD: "The Best Exotic Nanite Hotel")