Zoids: Guardian Force
Absolute Anime; TV.com; Wikipedia

This is the second series of "Classic Zoids," set a few years after Chaotic Century. After the war, the Empire and the Republic jointly established a peacekeeping task force called the Guardian Force, of which Van and Fiona (who we can now say we definitely like) are members. They're both certainly more grown up, now. Irvine and Moonbay are gone at first, but they show up later. And there's this guy Thomas Schubaltz who is also in the Guardian Force, who is the younger brother of an Imperial commander who was in the first series. He doesn't like Van much, but he's got a serious crush on Fiona. Thomas has a zoid called a DiBison, along with an A.I. computer system he created called Beek, which basically does the job of an organoid artificially. Beek sounds alot like R2-D2.

Eventually Raven returns to make more trouble, and there's also a guy named Hiltz who has a red organoid named Ambient, and a woman named Reese who has a blue organoid named Specula. The three of them sometimes work as a team, and sometimes make trouble individually. Raven was now piloting a Geno Saurer, which eventually evolved into a Geno Breaker. And well, there were some more powerful zoids the Guardian Force would have to fight, but I missed the last several episodes. I definitely hope to see the whole thing sometime.

The next series is Zoids: New Century/Zero, which is set several centuries later, and not directly related to the first two series.