Interesting filler/side characters
 

Many people seem to hate filler episodes, being rather pointless in the way that they don't contribute to a main plot. Characters in episodes like these are ones we will probably never see again either, and therefore there may be no emotional attachment to them, or reason to even bother with them.
However, some of these characters are pretty interesting, despite having as much use as a lump of dirt.

- Kakero/Kagero (sp?) from a Naruto episode was one of those characters. I think it was sometime after the 100 episode mark where this multi-part person caught my interest:


It might be hard since most of the time, filler characters aren't very memorable at all, but do you have any that stick out in your mind?

Well, to tell the truth, the "special" episode of Elfen Lied, which is more of a late filler for me, was really interesting in the further aclaration of



Can't recall anything else than this.

Hm... maybe he wasn't exactly a filler character, but Haku from Naruto was pretty darn interesting. Just when I thought he would be one of the main characters, they
yea...

What the hell? Haku wasn't a filler character at all. Dumbest reply ever right there.

As for interesting filler-characters, pretty much everyone in the G-8 filler-arc in One Piece was pretty cool for a filler.

The thread title says "filler/side" characters. Haku wasn't a main character or filler character, so he fits in the side character category.

I still remember the Tucker father and daughter characters from Fullmetal Alchemist. Their story surprised me very early in the anime, and it was interesting to see how the truth within that family was revealed.

As I'm slowly beginning to realize that I want to watch Twelve Kingdoms again, I remember liking King En and Enki, the two arguably strongest supports of Youko Nakajima, the main character. King En was pretty charismatic and a really great leader, but it's nice to see a guy like him partnered with a rather rebellious and upstart Enki.

Fudo (was that his name?... the man with a metallic claw that can predict anyone's future actions by some minutes) from Get Backers, I really found him to be a pretty interesting character but unfortunately the series never gives you any detailed information as of what he exactly is and the reason he is so obsessed with killing Nido... however his was a very well done one in my opinion.

And the whole Aristocrats deal from Wolf's Rain (Darcia, Yagara, Okam, etc.) sounded very interesting, but they never got into much detail to it either, at least I would have liked to know more about the back story of the Darcia family.