on its own. Both Ta and Sa get separated from Cha-Ka during the earthquake that marks the beginning of season three and were not seen there after, though it was mentioned their tracks were seen "ending at a dead-end cliff-face and disappearing" by Will in Season 3, Episode 8. Although never referenced within the series itself, the pilot script refers to the Pakuni's full names as "Cha-Ka-Ta" and "Cha-Ka-Sa" but shortens them to "Ta" and "Sa" for the sake of brevity. The youngest Paku was just called "Cha-Ka" because he lacked identity with his tribe until such time as he earned his name. Originally, there was also a fourth Paku named "Cha-Ka-Ra" but "Ra" was dropped from the story during pre-production. Sleestak Sleestak are devolved green humanoids with both reptilian and insectoid features; they have scaly skin with frills around the neck, bulbous unblinking eyes, pincer-like hands, stubby tails, and a single blunt horn on top of the head, and bear a resemblance to the hypothetical "Dinosauroid". Sleestak often communicate with a hissing sound that rarely changes in characteristics. However, like their Altrusian ancestors, they possess some rudimentary form of telepathy as well. Sleestak are more sophisticated than Pakuni and are able to make crossbows, rope, nets, periscopes and other relatively advanced technologies. Sleestak are typically equipped with a crossbow and a quiver full of metal bolts which hang from their waist. The Sleestak have a current population of about 7,000 according to the Library of Skulls, but there were only three Sleestak costumes available for the show's production, which sometimes required creative editing to create the illusion that they were that numerous. The Sleestak live in the Lost City, a tunnel complex originally constructed by the Altrusians. They hate bright light and rarely venture out during the day. They also have a "hibernation season" during which they stand motionless; cool air keeps them in hibernation, and the heat from lava in a pool that the character Peter Koenig (see below) dubbed "Devil's Cauldron" inside the caverns of the Lost City revives them again on a regular schedule. The Sleestak are very defensive of the Lost City. They know that their ancestors built it, but do not know how or why. They have occasionally tried exploring beyond the chasm that separates the Lost City from the rest of the Land, but their expeditions generally do not return; they consider the