Pellaz
Tigron of Immanion
This was the platform anime series that started my addiction back when I was 8 years old. This was running alongside most of the other popular "cartoons" like Transformers, G.I. Joe ect. ect. and there was something that I found more substaNtial then, and even now with this series an actual PLOT. From this point forward (including Starblazers and to a lesser extent, Voltron), it set the bar for animation. Most cartoons of that time, and even now, try to solve a problem in 25 minutes or less independantly with no underlining pplot, and comes off shallow. I feel this is why Anime has become huge in the U.S., it's not just the actual animation, but the stories as well.
Both the "serial" nature of the show (as opposed to episodic), plus the fact that main characters were sometimes killed off, set Robotech wayyy apart from the other afternoon cartoons like G.I. Joe. I'll never forget watching the episode of Macross where Roy (Fokker in the Americanized vers.) buys it. I turned to my friend and said "Did that just happen?"
Later in that series and again in Southern Cross, we saw it again. Main characters were never killed in conventional cartoons, so this was a real eye-opener. There was even a rumour that Robotech was eventually cancelled in Atlanta due to parental complaints about characters dying. Lending credence to this was the fact that the last episode ever aired was the episode BEFORE Roy's demise, after the show had already cycled through the entire series at least twice.
Not only was Roy's demise handled with a lot of class, but the emotional effects lingered for several episodes (as you'd expect)...in the non-serial world of most animated shows back then, that was also unheard-of. The concept of a wide, far-reaching, long-running story arc became the norm for all ambitious anime after that.