I've got almost all of them, just missing the chase versions of series 1.0.
Beta Midgets are slightly larger than the current Microman figures, around 4.5"
The later released Epsilon Midgets are the shortest, but still over 4"
They are a bit fragile (basically being just highly pose-able gashapon figures) especially series 1.0. That's really an understatement. Series 1.0 are pretty much complete junk. The wrong plastic was used or something and all the joints end up cracking. I think the problem affected 100% of the series 1.0 figures. And the plastic cannot be glued. It's like the plastic used for the figures was the same plastic used to make glue bottles. Nothing I have found will work on it. I've managed to somehow get a set of series 1 to stay together for display, but they won't hold up to any play/posing.
By the way, the plastic used on the "jackets" (armor and weapon sets) wasn't bad like with the figures.
Series 1.5 and later were a great improvement. By series 3.0, they are fairly solid figures. The bad guys, called Larvae, from series 3.0 are some of my favorite figures. The later Epsilon Midgets are better yet. Still not as sturdy as a Microman figure, but not bad at all. A nice plus is that the jackets are Microman compatible, especially with the Military Force figures.
They were all released a while ago, so I think your only bet now is YahooJP auctions. There is a nice lot with a low starting bid right now:
tinyurl.com/2v3geyThis auction has already rolled over a couple of times, so I wouldn't expect the price to get too high. The lot includes the box set, which has 2 exclusive figures (around series 3.0 quality) and a nice book with pics of all the Beta Midget releases.
Here is a link to Enari-san's blog:
blog.goo.ne.jp/sword-c-labo02Enari-san is the creator of Beta Midgets. He still makes kits, and I think figures, to sell at Wonder Festivals.
If you scroll through Mike Harvey's Of Micronauts and Men blog, you can find some nice pics of some of these kits:
microotaku.blogspot.com/Here's a couple of direct links to pics of the Beta Midget bike kits (but check out the rest of his blog for lots of other cool items):
tinyurl.com/yvj9gntinyurl.com/2cgrseHere is a breakdown of Beta Midget releases (that I know of):
Series 1.0: 3 figures, 3 jackets, and 3 black version, chase figures
Series 1.5: Series 1 in new colors/ better plastic, + 3 chase figures in dark silver.
Series 2.0: 2 figures, 3 jackets, 3 Early Type figures
Series 2.5: Same as 2.0 but in new colors
Series 3.0: 4 new figures (1 male + 3 female), 2 jackets, and 3 Larvae
Box Set: 1 Early Type figure and 1 Larvae
Epsilon Midgets: 4 set sold online in solid red, white, blue, and black
I've seen pictures of other color Epsilon Midgets, but I don't know if they were ever for sale.
There is more info at Microforever.com:
www.microforever.com/betamidget/bmidgetindex.htmWow, that's way more info than you asked for, but I really like Beta Midgets and rarely find any one else interested at all in them. Good luck finding some.