Farthest left is a Getter Raider Gokin, no clue on the yellow guy. The blue arm you see with 28 on it with the axe is a Tetsujin Gokin, then Mazinger Z Gokin, then Dangard Ace with a Mazinga Plider beneath it. The one with the shield is Mekanda Robo and then there's Mechagodzilla.
Honestly some pretty expensive figures for what they are. I think all of these minus the 'Zilla were made by Popy in the 70s and 80s.
