The inhabitants of Dulaine, a people devoted to physical wellbeing and bound by exacting customs, visited by a Cerritos away team in the Lower Decks episode The Least Dangerous Game.
The Dulainians are a humanoid people who prize health and the body, go about lightly dressed and take their many customs very seriously. Their world is served by an orbital lift linking the surface to a platform in space.
They appear in The Least Dangerous Game in 2381. Commander Ransom, testing Beckett Mariner's willingness to follow orders, assigns the engineers Billups and Rutherford to handle the diplomacy on the surface while he and Mariner repair the orbital lift, the opposite of what their skills suggest.
The engineers duly offend their hosts and find themselves in real danger. Mariner defies Ransom and makes a dramatic descent to save them, only to find that he has already settled the matter by impressing the Dulainians with his own physique.