A cute green alien cat sticker is a quirky and adorable way to add personality to your screen. The sticker is also a great way to show your love of cats and aliens. The cute green alien cat sticker is a popular design that can be found on many different websites and if not, you can place it yourself. The sticker can be customized with different sizes and alignments, so you can find one that perfectly suits your style. A Cute Alien Cat Sticker.