Oh wow, you really pumped out quite a bit of entries for this challenge!

This one is my favorite out of the three. It's nicely done and I like the design.

Nice palette! A few crits come to mind:

I wish the light would illuminate some sort of facial shape on the machine. It's not immediately clear how the two figures interact with each other, it feels stiff. What's the light on the back of the human's head? I read it as an eye at first, but then I realized his body was facing the opposite direction. The pixel technique is very refined and detailed, yet the basic construction seems approximate.

However, I love the mood the colors evoke, and the execution of a scary silhouette. Something feels Wizard-of-Oz about this.

 A rainbow ribbon!

lol philippe you're going to win all three prize ribbons :P

 The darkness is nice to set mood but makes no sense, since the other body facing us is so well lit. Feet are kinda wonky, and tension is created when the foot ends exactly on the edge of the canvas. Cool piece though

I really can't even tell what is on the left side, it's just too dark with too little information to actually suggest anything. Guy on the right looks fine though. It's spelled "Japanese" btw.

Your color choices and rendering is good, iffy composition still but not bad.Some shapes could be refined, but interesting work overall. Looks great.

 maybe ;)

A triple win this time?

It would be nice to see some sort of collection device, or the process of collection. It's hard to make it out at first glance what he's doing. It's a nice piece, like all of your other ones.