Combined military might of the universe

[awa]

on the other hand even though the book could destroy the scifi universe the serious contenders can destroy whole planets with ease so at best you have mutually assured destruction.

Though the Pa'anuri of schlock mercenary are a space capable species that could destroy all life on a planet with ease just by virtue of their size without requiring any technology at all. They are also invisible, and invulnerable to conventional weapons. Gravity weapons of extreme power and wormholes are the only things that can harm them.

https://www.schlockmercenary.com/2020-03-28