Ultra-Act Jet Black Ultra Brothers , Monsterarts Kiryu High Mobility Type
 

MechaGodzilla has more forms than Goku :lol

I was expecting them to do dark Ultraman and Ultraseven sooner or later. I'm glad they're exclusives!

Which film did this version of Kiryu appear in (if at all)? I wasn't a fan of the Kiryu films so don't really remember much of the details.

EDIT: Looked at the Tamashii page and can see its Tokyo SOS!

Well, technically Goku has more forms if you get into the different Gis he wears at various points in the series :lol.