Bowser resists Death Manip with the Safety Ring. Almighty isn't that much more useful seeing as Bowser doesn't specifically resist magic or energy projection anyway, though it would get past any attempts at forcefields, invul and attack reflection.
Ultimately it's his lack of significant resistance to Mind Manip that screws him over here. Evil Smile + Ghastly Wail GG for Almighty-based Death Manip.
The real cal howard wrote:
Just pumping in to say that Bowser has a thread that makes his mental resistance from minor to well...normal mind resistance due to some shenanigans in the Superstar Saga remake.
Even if Bowser get resistance to mind manip, there is still Almighty-based death manip, which should ve enough to kill Bowser.
While I’m unsure if Almighty based (and therefore unresistable) death manipulation might be an NLF, while yeah it would kill Bowser no problem, the resurrection is still a thing unless Joker could bypass that too.