Ok same deal as the Autobot poll. Please post your top 10 Most Iconic G1 Decepticons in order and feel free to provide any explanation if need be. Also vote ALL 10 in the poll. Use "Other" for characters not listed and note them in your list.

I've used the same criteria I used for the Autobots:

How prominent were they in the cartoon / comics?
How memorable were they in the cartoon / comics?
Have they been featured in the live action movies?
Coolness of the toy
How likely are you to see this character on a retro T-shirt?

So onto my list. I've again organised it into tiers.

The locks

1. Megatron
2. Starscream
3. Soundwave
4. Devastator
5. Shockwave

This is a rock solid top five.

The probables

6. Galvatron
7. Rumble

The questionables

8. Trypticon (far more memorable than his foe Metroplex)
9. Bruticus (was featured in some of the best episodes)
10. Predaking (Coolness of the toy elevates it here)

The honourable mentions

Astrotrain
Skywarp
Thundercracker
Cyclonus

Interestingly I've selected three Combiners and a Titan in my top 10 despite not including any in my Autobot list, I just think they were more memorable characters.