A spacefaring insectoid species who regard expressions of gratitude as hostile, which caused a brief exchange of fire with the USS Cerritos during a handover of a map in 2380.
The Clickets are an insect-like species with their own starships, among them the Tweerk. Their customs reverse a basic courtesy of most humanoid cultures: to thank a Clicket is to insult it. They appear in the Lower Decks episode Veritas.
In one of the flashbacks told by the ensigns, the Cerritos meets the Tweerk to receive a map of the Romulan Neutral Zone. Captain Freeman thanks the Clickets for it, and they open fire at once.
On the bridge, confusion over an order adds to the mess, and Beckett Mariner is sent to the brig. The map leads to a covert mission to recover a stolen ship, events the lower deckers must later describe before what they take to be an alien court.