Meruem is 40 days year old, meaning he is a rookie to being alive.
A winning matchup for our resident Rookie Crusher Tonpa.

Chrollo fans are the same as batman fans "Yo but if he had prep time tho"

Kurapika: waaaaaaait. So you're like part spider?

Meruem: like 3% of my DNA?

Kurapika: Perfect.

The idea of Meruem losing just because he willingly wanders into Knov’s ability due to overconfidence is hilarious-

Meruem can barely withstand the property of gum. Add in rubber, he doesn’t stand even stand a chance

Hypothetically, Hisoka can use texture surprise to transform himself into Komugi, ultimately beating Mereum.

Also, let’s not forget that Bungee Gum has the properties of both rubber and gum.

Komogi can and has defeated Meruem

I found Ging very frustrating during the show , his strongest power I have seen was Dead Beat Dad Vibe

If Meruem became a spider, Kurapika could then take him out.

"If you can't win, nuke em!" -Netero

Gon could beat Meruem he has a power called main character and can’t die

I think that Pitou's dialogue about Gon in the manga makes an even stronger argument for Gon being able to kill Meruem. Pitou has the features of a cat, and all felines rely on kill shots when hunting prey by using their fangs to target vitals. So the statement "As I feared, his fangs might even sink into the king!" would most literally mean that Gon cannot only harm Meruem but also kill Meruem if done successfully.

Keep in mind netero didn't bring the strongest hunters he brought the smartest and most strategic there are still powerful hunters who roam freely and do what  they want

These lists never mention Komugi. However she is the only one confirmed to have beat him

It is just insane how popular HxH still is.. So many fellow masochists.

I find the whole discussion pointless because the final point of Meruem in the story is that there are actually tons of humans who could have killed him easily. In the end he got done in by a small device that a very large number of humans could easily mass-produce. And none of his strength or ability to evolve could do shit about it.

I only say Rookie crusher Tonpa

The whole point of Meruem is that he's defeated by his human side

Here's the real top 5 of who's killing Meruem:

5) Nanika
4) Adult Gon
3) Tonpa
2) Komugi
1) A singular can of raid

Just a correction: If Killua is the one making the request to Nanika, the cost will be pretty much a chocolate at most, as long as he is the one to receive her next request, which is the Killua's big secret: He does not get charged heavily for his requests to Nanika, making them together pretty much unbeatable. Which also raises the question: "Couldn't Killua just ask Nanika to restore Gon's Nen?". Still, having Killua rewarded with infinite power after his character progression from former Pro Assassin to the kindest brother in contrast to Gon ending completely powerless after his journey from kind former "escort" to "fuck myself, I am blasting your head because I think you killed my friend that is not actually that and just became a girl instead...". So I like this ending of both characters and honestly cannot think of a proper way to bring either of them back to the story without making it feel forced. Gon had his journey, met his father, which was his goal when becoming a Hunter, finished his journey, lost his powers (which also means that he will not be attracting foes due to the "non-written rule"), and can go back to his peaceful life on the island... Killua learned to find himself, reunited with his most beloved sibling, and will be a great brother after his whole journey with the others so far.