Yep the Tsuchiya twins were the first twins before the Takagis(as far as I know. Correct me if I am wrong on the first twins part).
There is an ep of Dairanger where it involves Kazu and his doppelganger, and Blue Beet's actor was the doppelganger. :lolol
No joke.

Update regarding this release-

Shout! has confirmed that they were not able to secure the Dairanger movie rights, so that release will not be part of this set.

That's odd. Are the rights co-owned by someone else?

Not surprised honestly. A shame, but oh well.

I have to jump on this! I've only watched a couple of episodes of DaiRanger, and it's pretty awesome! Can't wait for the release!

Heads up, Dai is now $36 on Amazon.

Finally a reasonable amazon discount. That's a price I'm happy to pay for this set.

Having watched Dairanger, I'm less timid on buying it now, so a discount is nice.

Oh, and Zyu is $28.

Well damn. Makes me wish I hadn't picked that set up at release previously. Although I think it was only like $38 when I got Zyu. Either way this is a good price Dairanger. Still kind of miffed that the movie isn't included but whatever.