If you're not aware of these two, they're a pair of absolute units who have become very popular on social media on account of their size and the extreme methods through which they've achieved that size.
Seriously, check these guys out.
Twenty-nine-year-old Romario do Santos Alves, also known as the 'Brazilian Hulk', confirmed on his social media that he has agreed to a challenge laid down to him by his Iranian counterpart, 27-year-old Sajad Gharibi.
The South American colossus, who currently weighs around 16.4 stone - which is huge for a man who is only 5'8" - posted: "I will go up to 120 kilogrammes (18.9 stone) and I send a message to you, the Iranian Hulk who is challenging me: I will go up to 120 kilogrammes and you will go down to 120. I will tear off your head."
Wow. Those are fighting words, if ever they were spoken.
It is thought that his Iranian challenger Gharibi currently weighs in at 175 kilogrammes (27.6 stone). A significant advantage, which is probably why Romario has asked him to come down to meet him somewhere in the middle.
It is to be hoped that the Brazilian's claims to be training and gaining weight healthily are to be believed. Media in his home country reported back in 2013 that he nearly lost an arm as a result of taking controversial injections of oil to aid his significant bulk.
The injection of the oil synthol to enhance the appearance of muscles is pretty commonplace in the bodybuilding community, but medical professionals are adamant that its use should be stopped.
In fact, they claim that it can cause severe damage to the body. That includes serious complications such as pulmonary embolisms, as well as all sorts of nasty stuff like nerve damage, infections, and gross oil-filled ulcers on the muscles of the user.
Sounds barely worth it, right? You may remember the Russian 'Popeye' character Kiril Tereshin. He's had a few problems after mixing his own synthol and injecting that into his arms. To be fair, that's only just about the strangest thing about that guy.
He also loves nothing more than chowing down on some cat food. Some people, eh?
Anyway, issuing the challenge a while back, Gharibi told his rival: "Be brave and invite me to fight instead of hiding behind your sponsors. I am ready to fight you, show me what you've got to say in the ring."
Well, it could be the most underwhelming bout since KSI vs Logan Paul, but who wouldn't like to see two unusually huge men beating seven shades out of each other?
Make it happen, guys.