REVISED 6/22/11 9:25 PM EST
I managed to spot 29 grunts out of this monster to appear in the movie. I feel sorry for the man or men inside this thing. Only half of those I spotted appeared in Power Rangers in one point or another. At further inspection, I found more!
They seem to be missing these 5, maybe they are located in the back:
Madaraman (Goggle Five)
With Power Ranger names...
Note: Ryuujinhei Jaryuu (Lava Lizard) are not included probably because they are doing one minion per series. Even though those grunts belonged to another sect, it is still from the same series, note how the High Zobiru (Styxoid), Batsuroid (Blue Heads), and other extra grunts are not included.