User blog comment:IFlavour/Xenon/@comment-5007614-20140619231731

I got one on Floor 91-100. Had to fight Xenon twice, but only captured one (Anima). On my iPad, I got Xenon on Floor 81-90, of which I also had to fight him twice, but captured only one (Breaker). I was just trying to clear the floors to unlock 101+, and I guess I got lucky finding and capturing Xenon along the way.