On the Blink - S1.E5

The planet Rigel 5, home to a species of Koalas, has been enslaved by KOMPLEX's Toad Fleet and refurbished into a resort for their officers. Bucky and the crew of the Righteous Indignation attempt to free them, only to find they cannot penetrate the forcefield the Toads have set up around the planet. After watching a Toad ship pass through effortlessly at the same time, they determine it deflects only warm-blooded mammals. They dispatch AFC Blinky to Rigel 5's surface, as he is immune to the properties of the shield. However, ToadBorg catches the little android, and reprograms him to infiltrate the Indignation and destroy it.