Terrahawks was the first Gerry Anderson puppet series to be made without the familiar "Supermarionation" puppetry technique and instead used a new superior "Supermacromation", a Muppet-style puppetry technique that made the puppets look more realistic and enabled them to be operated for the first time without any strings.
One of the songs that Kate Kestrel sings is called "SOS Mr Tracy", a reference to Thunderbirds (1965), producer Gerry Anderson's most famous show.
The series used two different end-title sequences. In the UK, the credits were displayed against a tic-tac-toe game between red "Cubots" (from the Zeldan Android Empire) and blue Zeroids. In the event of a "draw," the Cubots always won by knocking a couple of Zeroids aside to form "three in a row." Zeroids and Cubots alike boasted three different facial expressions throughout the game: blank (during play), frowns (for the losers) and smiles (for the winners). Said credit sequence was rarely seen in the U.S. until TERRAHAWKS' recent 5-DVD box set had been released to stores, 20 years after its TV debut. Prior to that time, the end-credit sequence-background familiar to U.S. audiences had featured a bouncing Zeroid and stationary Cubot (both animated); after most of the titles had rolled, the Zeroid would bounce high out of frame, then fall on the Cubot and crush it, finally smiling and winking at the camera.
The series takes place in 2020.