@ampharos- What Blood said is true, but if you want to know more, see the BeyWiki Article of Diablo Nemesis.
I know I'd actually be getting an old matter up here, but I find it important-
I see a few objections upon the inclusion of anti-attack into the Defense category.
Well, its what I have always believed in, and have never been wronged for that.
So, I believe that its never wrong to consider an anti-attack combo as a Defender.
If we consider the type match-ups, Anti-Attack is solely meant to beat Attack. So technically, this fits as a Defender.
Moreover, I have always thought of this old adage, which applies very well to Anti-Attack combos-
"The best defense is a good offense"
@Shaba- Attack-Defense would more or less relate to anti-attack, haha! Rock was never good for such things I suppose, and there has always been just one Attack-Defense hybrid Metal Wheel, and that is Diablo.
Also, Duo 230MB shouldn't really be Weight Based Defense. This combo utilizes a completely different style of battle, and that is wobbling. Something like the famous MF-H Basalt Aquario BD145MB can be called weight based Defense.
The Others- The existence of "true" Balance types has always been a debatable issue according to me.
According to the BeyWiki, a Balance type must combine attributes of all three types- Attack, Defense and Stamina. Do we have any such combo? Probably not, but there might be exceptions.
If one says that even if a bey combines the attributes of just two types; even then it can be considered a Balance type. I wouldn't really agree to this, unless the definition of Balance types actually changed recently.
I'd prefer to call such combos hybrids, to be honest. Not a "legalized" term, but I have always used it around the Forum, haha!
Team IB Revolutions
Thanks to N0body for the avatar and Synth for the signature!