One's a lean, formerly mean but now incredibly affable boxing legend; the other's a living parody of an unmemorable Street Fighter character.
They live very different lives. George Foreman slings fat-grilling machines on home shopping networks. Steven Seagel films low-budget martial arts movies in Russia and carefully maintains the single worst grooming situation in the world.
So we were surprised to wake up to the news that former World Heavyweight Champion Foreman had challenged his Seagel to a massive punch-up over Twitter.
Nobody even knows why.
Floyd Mayweather and Conor McGregor recently opened the floodgate for pure prime-time nonsense, but nobody on Twitter can get their head around the reason for the unlikely match-up.
Apart from the fact that every man, woman and child would buy a pay per view ticket, of course.
Perhaps the greatest part of the whole challenge is Foreman's insistence that no weapons are used in the open rules fight.
Seagel practices a martial art called 'Aikido', but neither man, both in their late sixties, has fought professionally in decades. Check out Twitter's reaction below: