@Rooster
Ah, that could be it. It's hard to interpret the leader's face, never seen a face quite like that.
@cromat
We never saw his body, so maybe he could be still alive. But he fell from the top of the tower, and he never came back during the gamble, so at the very least he is immobilized. Plus before the fall he was pretty much KO'd if not dead already.
In chapter 249 (page 1), there is a small text bubble that references his falling. They don't quite say if he's dead though, and we never see any blood splat or anything in the SAT battle (from what I could remember). I guess if he fell on something, like the ADS or a person, he could maybe be alive, but heavily injured/paralyzed?