I kind of like this idea of the "group hug" (from Entry #5 and Entry #4) and I like the color schemes. One element that I like from #4 is that all of the characters are symmetrical (they all have the exact same shape). I also like from #4 that there's a gradient in the color: from a darker blue to a lighter blue and from a darker gray to a lighter gray. But what I like from #5 is that the symbol is more square than triangular.