What game system do those figures go to?  It looks like a couple different board games.  I like the quad unit at the end, it reminds me of a Big dog robot pack unit loaded up.

They are for a game called “Infinity “. 

Oh those look cool! I bought some of them years ago for a friend's Star Wars RPG. Unfortunately the game fell apart so a bunch of the figures are still sitting around unpainted. I really need to get back to them. 

What are you priming with if I may ask? A lot of guys swear by the Citadel GW primer but I like the Tamiya stuff better. I've tried using the black primer but I like the white stuff better- it's easier for me to see detail. 

Gamera,  I’m with you. Tamiya all the way. Whether I’m decanting or using straight from the can, it always comes out great. I’ve even hooked a couple of gamers on Tamiya, and since GW is not cheap, they are still talking to me.