Last week, you had a glimpse of this product line - now I can tell you more...
Though the 12mm alien infantry can be used with 15mm games and with any set of rules, they were made for use with the Distant World sci-fi battles (DBA mechanics system).
These are the Centaurs - armored men-horses with various heavy weapons.
And these three figures I'm told are Feline Levy and Canine Elite - I think the middle figure is a cat-alien, since it doesn't have a snout.
The manufacturer is Time Portal Hobbies.