I'll still have to go with Swindle even though he'll probably take any opportunity to destroy anyone he doesn't like. He's an enthusiastic black market dealer.
Probably TFP Dreadwing and Breakdown. Though I also think Beast Wars Waspinator might be one too. Seems like the bot just needs a hug and somebody that will listen to him.
G1 Octane. I really felt bad for him in the one episode where he's nursing Trypticon back to health. The humans were basically blackmailing him into stealing national monuments or whatever. He was also friends with Autobot Sandstorm. Knock Out. He might find fleshies sort of oozy and disgusting (I can picture him freaking out the first time he saw a human with a really bad cold blowing their nose), but hey they make awesome cars and they like to race! Vrrroooom. TFA Blackarachnia - Might be limited by her disgust at her own organic side, but still.
My top five 1. Armada Starscream 2. Skybyte 3. Prime Dreadwing 4. Armada Megatron, towards the end of the series. 5. DOTM novelization Megatron (can't believe I'm actually listing him) but at the end of the book he actually asks for peace...
Prime Breakdown wasn't really a "good bad-guy" he just wasn't a jerk 100% of the time. He still did some fairly bad things though. Dreadwing and to some extent Knock Out feel like what this topic is looking for.
Blitzwing's line about "Sometimes it's better to be known for one's enemies" is probably the most honorable, thoughtful thing ever uttered by a Decepticon in the G1 cartoon.
Yeah... no. He beat his own troops regularly, and tried to erase the Autobots and Maximals from history, and kill protohumans just so that the Autobots wouldn't have the advantage in the future. He's one of the meanest badguys in existence.
