And they call themselves Decepticons.
6 seconds sound clip from The Transformers (1984) - Fire on the Mountain TV Series.
You can hear this line at 00:20:07 in the DVD version of the movie.
Quote context
[...]
- What's the matter, fearless leader?
- You and Starscream look real geeky!
- Maybe the Autobots aren't such wimps after all!
- Does he have to make that awful thunder noise? I've got a headache!
- And they call themselves Decepticons.
- I shall be avenged, Autobots. I shall return!
- Do you think Wheeljack's invention will work?
- Without the crystal to regulate the energy, the whole mountain could explode.
- With Wheeljack's inventions, you never can tell.
- Okay, Skyfire... let's cap this energy gusher.
[...]