Biology
Jacondans are humanoids with large, pointed noses, grey skin, feathers instead of hair and small horns coming from their head. These feathers come in a wide variety of styles and lengths and grow in the same places as eyebrows, mustaches and beards.
- One Jacondan had no horns, for which no explanation was given.
History
Jacondan mythology claims that one of the queens offended the Sun God, which made him release the original Gastropod. This giant Gastropod produced many offspring, who devoured all food on the planet. The Sun God saw what he had done and relented, causing a drought that killed all of the Gastropods.
- Since the Gastropods did exist, other parts of the legend may be true or be a corrupted version of history.
This mythology was at least partly true and at least one of the Gastropods lived. These Gastropods conquered Jaconda while Azmael was in power. The Giant Gastropods took over Jaconda using their telepathic abilities and devoured all available vegetations on the planet. Food was scarce for the Jacondans, so they resorted to thievery and disobeyed their masters.
To end the famine, Mestor, the Gastropod's leader, commanded Azmael to bring the two nearest planets into Jaconda's orbit. Azmael believed they would be used for growing food and kidnapped two geniuses from Earth, Romulus and Remus Sylvest. The Doctor, Peri and Lieutenant Hugo Lang discovered this kidnap and followed Azmael to Jaconda. There, the Doctor figured out that Mestor's plan was to destroy Jaconda by sending the two planets into the sun, allowing the Gastropods' offspring to be released across the universe. Azmael was able to stop Mestor, though he was killed in the process. At this time, the Jacondans were released from their telepathic mind control. (DW: The Twin Dilemma)