Full disclaimer: I don’t play Pokémon
Alright so I was told that Cosmoem weighs 2,204.4 pounds and that pokéballs convert the Pokémon into energy, so I decided to do some calculations.
E=4.4x10^20 joules or 44000000000000000000 joules
That’s really hard to picture so let me put it like this: a 100-megaton nuclear warhead is roughly 10^17 joules. Lillie is carrying around the energy equivalent of 4,400 of those things. The United States currently has 4,500 nuclear warheads and not all of them are usable and/or exactly 100 megatons. She easily may have as much or more energy chilling in her bag than the United States does in its nuclear arsenal. Be afraid. Be very afraid.
TL;DR: Lillie from Pokémon Sun and Moon carries around more energy in her bag than (presumably) the United States has in nuclear weapons