Unidentified action figure
 

Hi folks - new poster here.

I'm trying to identify an action figure that I found in a big box of secondhand Lego in the late 1980s (in the UK). It's continued to sit in that box until now. (I'm having a clear-out.)

It's transparent blue/white, and transforms into some sort of rudimentary diamond shape.

Any help in working out what it is would be much appreciated.

Okay, found it.

Solitaire of Bandai's GoBots series.

Rock Lords is the name of the series. It was a subline of Go-Bots