[s3e4] Fool's Gold < 95% Real >

A greedy local mayor attempts to exploit the aliens for their gold-producing capabilities, which leads to one of the aliens eating meat and Rampaging through the town. Key Details

One of the aliens goes missing, and Ben, Gwen, and Kevin are sent to find them.

It is revealed that these aliens normally eat popcorn and produce solid gold waste. However, if they eat meat, they undergo a monstrous transformation into a giant, aggressive beast.

The episode is frequently cited by fans as a "filler" episode and is often noted for its humor and unusual concept.