Cloaker

Cloakers are a body-type in the War for Cybertron portion of the Generation 1 continuity family.

Did you see something just now? What was that noise? And what is that glowing light over there? Odds are, it's a cloaker, a Transformer who is using invisibility to sneak up on a target and take them out. Extremely fast and agile, cloakers already heavy advantage is made greater by their ability to become undetectable to sensors. However, those are their only advantages, as cloakers possess weak armor and firepower. When their cloaking field is disabled with enough shots, they starting running like there is no tommorrow—because for them, there isn't. Transformers: War for Cybertron