Unfortunately for us, the Insecticons are Decepticons, too.
6 seconds sound clip from The Transformers (1984) - A Plague of Insecticons TV Series.
You can hear this line at 00:20:54 in the DVD version of the movie.
Quote context
[...]
- The traitors! We befriended them and now they steal our power source!
- For once, I wish Megatron the best o' luck.
- Unfortunately for us, the Insecticons are Decepticons, too.
- And with the same engineering they won't stay enemies for long.
- Very true. They'll be back. But when they return...
- 'Cause we'll be ready for 'em!
- Spoken like a true Autobot, Spike.
[...]