They're YA so the plots are kind of simplistic. I've read the first two, and whilst the first wasn't bad, the second was much better. I got them from the library.
I like that he doesn't shirk from difficult choices and consequences. The villain calls up the MC and gives him a choice between saving a captured hero or some civilians. The MC does the right thing, and the hero's death is on his conscience after that.
But the plots are simple and there is very little (ie no) science involved.
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Quick! Competition! Vote for your favourite comic scripts
http://forums.millarworld.tv/index.php?showtopic=90564&st=20
It's not clicky, though, sorry