The third, Missing Link, deals with the events between Tekkaman Blade and Tekkaman Blade II.

Twin Blood is an alternate version of Blade and Evil's first battle, with drastically different character and mecha designs from the rest of the series. Blade/D-Boy does not need Pegas to transform and the armor more closely resembles the Radam humanoids from Tekkaman Blade II.

The first OVA, Burning Clock, tells the story of the Aiba family, goes into further detail about Shinya and Takaya's rivalry.

Tekkaman Blade takes place in the year 2300 AD. On a certain moment, the Radam attack earth. A few months after the beginning of the invasion, a tekkaman appears, he calls himself Blade and with the help of the Space Knights, Blade starts to fight the radam. But there are a few things that Blade isn't telling about his past. (Source: ANN)