SIGs: 3/5, 3.5/5, 3/5
For sigs one and three I am gonna group them. They are both similar in theme and suffer from being a tad boring, and both feel like evolutions of each other that culminated in the second sig. Swaps are fine but not perfect (Vuxta's helmet looks a tad warped) as well as the text. It all works fine but not great.
For two, I think its the best of the lot. Similar to the others, the additional effect in the bg turned out well, but again you erased the helmet in your cut which holds it back.